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How to connect Schrack CION EV chargers with Reduxi controller

Updated
⚡ Reduxi Controller · Knowledge Base

How to connect Schrack CION EV chargers with Reduxi controller

Integrate Schrack CION Home, Semipublic and Pro chargers via Modbus RTU or Modbus TCP for smart charging and dynamic load management.

⏱ approx. 30–45 min
🔧 Reduxi Controller · Schrack CION Home / Semipublic / Pro
🔌 Modbus RTU & Modbus TCP
⚠️ Licensed electrician required
👥 Audience: installers & Schrack sales partners
📄 Download as PDF
Schrack i-CHARGE CION Serie promotional image: three wall-mounted EV chargers, Ready. Set. Charge.
Text description of this image

Promotional image for the Schrack i-CHARGE CION series. Left half: blue background with the white text "i-CHARGE CION Serie" and below it "Ready. Set. Charge." Right half: white to light grey background with a photo of three wall-mounted EV charging stations in white and grey, each with a grey front panel, the printed brand name "SCHRACK" at the top and "i-CHARGE" on the front, and a black charging cable coiled around the unit with the plug in a holder at the bottom. The front panel of the left unit has a small ring symbol and a small display; the middle unit has a row of five dots; the unit at the back right has a wireless (RFID) symbol.

Schrack i-CHARGE CION series
📋  In this article
  1. Technical documentation
  2. Required equipment
  3. System overview
  4. Configure the Schrack CION charger
  5. Log in to the Reduxi web interface
  6. Add the Schrack charger to Reduxi
  7. Check readings & enable control

1 Technical documentation

The manufacturer's manual covers all three CION variants (Home, Semipublic, Pro):

2 Required equipment

  • Reduxi Controller – Stand Alone or DIN rail
  • Energy meter or smart meter for grid measurement – see the list of supported devices
  • Schrack CION Home, Semipublic or Pro with the latest firmware
  • RTU only: twisted‑pair cable for the RS485 connection between controller and charger
  • TCP only: network connection (LAN) for the charger in the same network as the Reduxi Controller
  • Laptop, tablet or smartphone with internet access

3 System overview

Which connection you use depends on the charger model:

🔌
Modbus RTU (RS485)
CION Home · CION Semipublic
→ go to configuration 4.1
🌐
Modbus TCP (LAN)
CION Pro
→ go to configuration 4.2

3.1 Modbus RTU – CION Home / Semipublic

Connection diagram: Reduxi controller to Schrack CION Home / Semipublic via RS485 A/B, and to the router via Ethernet
Text description of this image

Connection diagram on a white background with four components. Top left: a dark grey Reduxi controller box with the reduxi logo and a row of small status LEDs on top, labelled "Controller"; it has two RJ45 Ethernet ports and a green 3-pin terminal block on the right side. Bottom left: a white Wi-Fi router with two antennas and a Wi-Fi symbol, labelled "Router". Bottom left below the router: a globe icon with the letters "WWW" (internet). Right: a wall-mounted EV charging station with a grey front panel, a wireless symbol, the printed names "SCHRACK" and "i-CHARGE" and a black charging cable coiled around it, labelled "Schrack CION Home / Semipublic". Connections (cyan lines): a solid line labelled "Ethernet" from an Ethernet port of the controller down to the router; a solid line labelled "RS485 A/B" from the green terminal block of the controller to the charging station; a dashed line from the router to the globe (internet connection).

System overview: Reduxi Controller ↔ CION Home / Semipublic via Modbus RTU

3.2 Modbus TCP – CION Pro

Diagram: Reduxi controller and Schrack CION PRO connected by Ethernet via router, router to internet
Text description of this image

Diagram of the system overview for Modbus TCP with a Schrack CION PRO charger, tall image. Top left: a dark grey Reduxi controller (reduxi logo and LED symbols on top, two RJ45 ports and a 4-pin terminal block on the side), labelled Controller. A cyan line labelled Ethernet runs from its RJ45 port down to a white Wi-Fi Router (labelled Router). A second cyan line labelled Ethernet runs from the router to the right, to a white wall-mounted charging station labelled Schrack CION PRO (Schrack Technik logo, text i-CHARGE, RFID symbol, black charging cable coiled around it). A cyan dashed line leads from the router down and to the left to a black globe icon with the letters WWW (internet).

System overview: Reduxi Controller ↔ CION Pro via Modbus TCP

4 Configure the Schrack CION charger

Follow the path that matches your charger model. Once the charger is configured, continue with ⁠Point 5⁠.

⚠️

Electrical work – licensed electrician only Wiring and DIP switch settings require opening the charger housing. Disconnect the charger from the mains and secure it against being switched back on before you open it.
🔌 4.1 CION Home / Semipublic (Modbus RTU)

4.1.1 Wiring

Connect the RS485 terminal of the Reduxi Controller to the RS485 Modbus RTU terminal on the charger's circuit board using a twisted‑pair cable:

Reduxi Controller (RS485) Schrack CION (RS485 Modbus RTU)
A A
B B

The RS485 terminal of the controller is Port 1 – you will select this port when adding the charger in the Reduxi web interface.

Schrack charging controller wiring: RS485 Modbus RTU terminals A and B, RFID reader, DIP switch, V+ terminal
Text description of this image

Wiring drawing with the title "charging controller" at the top right. Left: a black and white line drawing of the open rear housing of a wall-mounted charging station with a rubber seal and screws; a cyan rectangle marks the controller board in the housing, and a cyan line connects it to a larger cyan frame on the right. In the frame, an enlarged diagram of a DIN-rail module with the printed brand "SCHRACK TECHNIK" and a model/article line. Top: a terminal strip with numbered screw terminals; a note above it reads "V+ (E1 auf V+ bei Home-Variante ohne RFID-Reader)" [E1 to V+ on the Home variant without RFID reader]. Left of the module: a box "RFID Reader (optional)" connected by a line to an RJ11 socket on the module. Under the socket a DIP switch drawing with positions 1 to 6 and ON/OFF. Bottom: a terminal strip with two wires labelled "B" and "A" leading to the text "RS485 Modbus RTU (z.B. von PV-Steuerung)" [e.g. from PV control]; a second small terminal block and a small switch block are at the bottom right.

Wiring diagram: Reduxi Controller ↔ CION Home / Semipublic
Wiring: Reduxi RS485 A (red) and B (black) to Schrack Home/Semipublic RS485 Modbus RTU terminals
Text description of this image

Wiring diagram in two parts, tall image. Left part titled Reduxi Controller Stand Alone / DIN Rail: line drawing of a white Reduxi controller with a USB-C PWR port, two RJ45 ports (WAN, ETH) and a 4-pin terminal block (GND, A, B, 5V) and four LED dots. Below it port symbols: PWR (USB-C), WAN (1), LAN (2), RS485 terminals GND, A, B, 5VDC. Pins A and B each have a wire: A red, B black. Under the symbols, vertical labels with arrows: 5VDC, ETH_WAN, ETH_LAN, GND, RS485_A, RS485_B. Right part titled Schrack Home / Semipublic: box with the Schrack Technik module iCC, Art.Nr. EMCICC1--- Mode 3, text Mode3 EN61851-1 Artikel Nr.: EMCICC1---. Top terminal row labelled A4, A3, A2, A1, E3, E1, S2, S1, PP, CP; a note above reads V+ (E1 auf V+ bei Home-Variante ohne RFID-Reader) [E1 to V+ for the Home variant without RFID reader]. Left of the module: box RFID Reader (optional) connected to an RJ11 socket; a row of six DIP switches labelled 1 2 3 4 5 6 with ON/OFF. At the bottom, a terminal block with four pins labelled G, V, D, D, with the label RCMU nearby; the red wire from Reduxi pin A goes to the right-most D terminal (label A) and the black wire from Reduxi pin B goes to the D terminal next to it (label B). Caption inside the box: RS485 Modbus RTU. Terminal labels at the bottom block are partly cut in the picture.

Modbus RTU terminal on the CION circuit board

4.1.2 DIP switch settings

The DIP switch block on the charger's circuit board has six switches. Set them as follows:

Switch Setting Result
1 / 2 OFF / OFF Bus operation via RS485 Modbus RTU (input E3 is ignored)
3 / 4 ON / OFF Bus address 1 – recommended, matches the Reduxi default

Bus address (Modbus Unit ID) – all options for switches 3 and 4:

Switch 3 Switch 4 Bus address
ON OFF 1
OFF ON 2
ON ON 3
OFF OFF 4 (factory setting)

⚠️

Factory setting is address 4, not 1 If switches 3 and 4 are left at OFF/OFF, the charger uses bus address 4. In that case enter Unit ID 4 in the Reduxi web interface – otherwise the communication test fails.

ℹ️

Switches 5 and 6 – maximum charging current These switches set the charger's maximum current and are not related to the Reduxi connection. Leave them as set during installation: ON/ON = 32 A, OFF/ON = 20 A (both 22 kW models only), ON/OFF = 16 A, OFF/OFF = 13 A (factory setting).
Schrack iCC DIP switch settings table: switches 1-2 OFF for Modbus RTU, bus address, max current
Text description of this image

Diagram of the Schrack iCC module (Art.Nr. EMCICC1---, Mode 3, EN61851-1) with DIP switch settings, tall image. Left: module drawing with top terminals A4, A3, A2, A1, E3, E1, S2, S1, PP, CP; note V+ (E1 auf V+ bei Home-Variante ohne RFID-Reader) [E1 to V+ for the Home variant without RFID reader]; box RFID Reader (optional) connected to an RJ11 socket; Schrack Technik logo; a DIP switch block numbered 1 to 6 with ON/OFF, marked by a cyan box; bottom terminals GD, V+, D-, D+, an RCMU block and terminals C2, C1; below, lines B and A labelled RS485 Modbus RTU (z.B. von PV-Steuerung) [e.g. from PV control]. A cyan line leads from the DIP block to an enlarged DIP switch picture titled DIP Switch settings: switches 1 2 3 4 5 6 with ON above and OFF below; the black sliders are at OFF for 1, 2 and 4 and at ON for 3, 5 and 6. Right: table. Switches 1 and 2, Operating mode: ON ON = all trained charge cards and the master card will be deleted, a new master card can be trained; OFF ON = normal operation (+12 V DC on input E3), opt. 0-10 V interface Mode 1 (see chap. 6.1.2.1); ON OFF = normal operation (+12 V DC on input E3), opt. 0-10 V interface Mode 2 (see chap. 6.1.2.1); OFF OFF = Bus operation for RS485 Modbus RTU, input E3 will be ignored. Switches 3 and 4, Bus address: OFF OFF = 4 (read from configuration memory, default: 4); ON ON = 3; OFF ON = 2; ON OFF = 1. Switches 5 and 6, Maximum charging current: ON ON = 32 A (only EMCION22xx for 22 kW max.); OFF ON = 20 A (only EMCION22xx for 22 kW max.); ON OFF = 16 A; OFF OFF = 13 A (read from configuration memory, default: 13 A). A red box highlights the row OFF OFF (bus operation RS485 Modbus RTU) and the whole Bus address block.

DIP switch settings for Modbus RTU and bus address

ℹ️

Remember the bus address The bus address set with switches 3 and 4 is the Modbus Unit ID (the device's address on the RS485 bus) you will enter in the Reduxi web interface later (see ⁠Point 6.2⁠).

✅

Charger ready The CION Home / Semipublic is now ready to communicate with the Reduxi Controller. Continue with ⁠Point 5⁠.
🌐 4.2 CION Pro (Modbus TCP)

4.2.1 Wiring

Wiring diagram: Reduxi WAN port to network switch, EV charger RJ45 and local router
Text description of this image

Wiring diagram of a Reduxi controller connected via Ethernet. On the left a line drawing of a white Reduxi controller shows its front: a USB-C power port, two RJ45 ports, a 4-pin RS485 terminal block and four LED dots on top. Below it, port labels with arrows: PWR (USB-C) with arrow labelled 5VDC; WAN (1) labelled ETH_WAN; LAN (2) labelled ETH_LAN; RS485 terminals GND, A, B, 5VDC labelled GND, RS485_A, RS485_B. The WAN port is connected by a cyan line to the second port of a Network Switch (photo of a TP-LINK 5-port Gigabit Desktop Switch, ports numbered up to 5). A second cyan line runs from the first port of the switch to a highlighted RJ45 plug (cyan box) in a photo of a cabinet interior with a contactor, blue and black cables and a yellow terminal block; the text next to it reads: Configuration via Ethernet (RJ45). A third cyan line with an arrow leads from the switch to the label: local Router.

Network wiring: Reduxi Controller and CION Pro in the same LAN

⚠️

Give the charger a fixed IP address Reserve the charger's IP address in the router (DHCP reservation). If the router assigns a new address later, the Reduxi Controller loses the connection to the charger.

4.2.2 Settings in the CION Pro web interface

Once the network cabling is complete, configure the charger in its web interface:

1
Connect to the same network
Connect your laptop, tablet or smartphone to the same network as the charging station.
2
Open the charger's web interface
Enter the charger's IP address in your browser. If you don't know it, look it up in your router's device list.
3
Log in
Username: operator
Password: Schrack1230!
These are the factory credentials. If the installer has changed the password, use the new one.
4
Open Load Management
In the menu on the left, click „Lastmanagement“ (load management).
5
Configure the Modbus TCP interface
In the „Modbus-Schnittstelle“ section, set the values from the table below and click „Speichern“ (save).
6
Restart the charger
Click „Neu starten“ (restart) at the bottom so the changes take effect.
Field in the Schrack interface Value
„Modbus TCP Server für Energiemanagement-Systeme“ (Modbus TCP server) Ein (on)
„Modbus TCP Server Basis-Port“ (port) 502
„Modbus TCP Server Registersatz“ (register set) TQ-DM100 – the register layout the Reduxi Controller reads

CION web interface login page with Username operator, password field and Login button

Text description of this image

Screenshot of the login page of the Schrack Technik CION web interface. Background: grey photo of a white wall-mounted charging station (printed text I-CHARGE) against horizontal slats, with blue wave lines; large white text CION at the bottom left; Schrack Technik logo at the top left; top right text: Manufacturer Serial Number: Not Set. In the centre a LOGIN box: Username: operator; Password: a value is entered and visible next to a Hide button (not written here); button Login.

Login page of the CION Pro (step 3)

CION web interface dashboard with LOAD MANAGEMENT menu entry highlighted

Text description of this image

Screenshot of the Schrack Technik CION web interface in English, Dashboard page. Header right: version 5.20.5-13170 1970-01-01 00:24 UTC, UK flag, Logout. Left blue menu: DASHBOARD (red, active), NETWORK, BACKEND, AUTHORIZATION, WHITELISTS, LOAD MANAGEMENT (highlighted with a cyan box), INSTALLATION, SYSTEM. Main area, General: Total Charging Sessions: 3 sessions; Average duration per session: 0.3 minutes; Average kWh per session: 0.00 kWh. Last month (export): 3 sessions; 0 kWh. System Status table (Name, Value): OCPP ChargeBoxIdentity (ChargePointID): MTG123456; OCPP State: IDLE (available); Type2 State: (A) Vehicle not connected, PR: NO CABLE. The picture is cut off below.

„Lastmanagement“ in the left menu (step 4)

CION Pro web interface Lastmanagement Lokal, Modbus TCP server on, port 502, register set TQ-DM100

Text description of this image

Screenshot of the Schrack Technik CION Pro web interface in German, page LASTMANAGEMENT, section Lokal. Header right: version 5.33.1-20092 2026-01-19 13:52 UTC, German flag, Abmelden. Left blue menu: DASHBOARD, AKTUELLER ZUSTAND, NETZWERK, BACKEND, AUTORISIERUNG, WHITELISTS, LASTMANAGEMENT (red), Lokal (marked), Modbus-Schnittstelle, SEMP-Schnittstelle (SMA Sunny Home Manager), EEBus-Schnittstelle, Dynamisches Lastmanagement, Hierarchisches dynamisches Lastmanagement, ASKI über OCPP-S, INSTALLATION. Lokal: Betreiber-Stromgrenze [A]: 32; Max. Energie pro Ladevorgang [kWh]: 0; Max. Dauer pro Ladevorgang [h]: 0; Energiemanagement über externen Eingang: Abschalten; Obere Strombegrenzung für SmartCharging bei Verbindungsausfall aktivieren: Aus; Alle Smart-Charging-Profile löschen: button Alle löschen. The section Modbus-Schnittstelle is highlighted with a cyan box: Modbus TCP Server für Energiemanagement-Systeme: Ein; Modbus TCP Server Basis-Port: 502; Modbus TCP Server Registersatz: TQ-DM100. Below: SEMP-Schnittstelle (SMA Sunny Home Manager): SEMP-Schnittstelle: Aus; EEBus-Schnittstelle: EEBus-Schnittstelle: Aus; heading Dynamisches Lastmanagement (cut off). Bottom bar: text Bitte das Gerät neu starten, um die Änderungen anzuwenden [Please restart the device to apply the changes]; buttons Änderungen zurücksetzen, Speichern (greyed), Neu starten, App neu starten (orange).

Modbus TCP interface settings (step 5)

Schrack CION Pro web interface Lastmanagement Lokal, Neu starten (restart) button highlighted

Text description of this image

Screenshot of the Schrack Technik CION Pro web interface in German, page LASTMANAGEMENT, section Lokal. Header right: version 5.33.1-20092 2026-01-19 13:52 UTC, German flag, Abmelden. Left blue menu: DASHBOARD, AKTUELLER ZUSTAND, NETZWERK, BACKEND, AUTORISIERUNG, WHITELISTS, LASTMANAGEMENT (red, active), sub-entries Lokal (marked), Modbus-Schnittstelle, SEMP-Schnittstelle (SMA Sunny Home Manager), EEBus-Schnittstelle, Dynamisches Lastmanagement, Hierarchisches dynamisches Lastmanagement, ASKI über OCPP-S, INSTALLATION. Lokal fields: Betreiber-Stromgrenze [A]: 32; Max. Energie pro Ladevorgang [kWh]: 0; Max. Dauer pro Ladevorgang [h]: 0; Energiemanagement über externen Eingang: Abschalten; Obere Strombegrenzung für SmartCharging bei Verbindungsausfall aktivieren: Aus; Alle Smart-Charging-Profile löschen: button Alle löschen. Modbus-Schnittstelle: Modbus TCP Server für Energiemanagement-Systeme: Ein; Modbus TCP Server Basis-Port: 502; Modbus TCP Server Registersatz: TQ-DM100. SEMP-Schnittstelle (SMA Sunny Home Manager): SEMP-Schnittstelle: Aus. EEBus-Schnittstelle: EEBus-Schnittstelle: Aus. Next section heading: Dynamisches Lastmanagement (cut off). Bottom bar: text Bitte das Gerät neu starten, um die Änderungen anzuwenden [Please restart the device to apply the changes]; buttons Änderungen zurücksetzen [Reset changes], Speichern [Save] (both greyed), Neu starten [Restart] (orange, highlighted with a cyan box), App neu starten [Restart app] (orange).

„Neu starten“ button (step 6)

✅

Charger ready After the restart, the CION Pro is ready to communicate with the Reduxi Controller.

5 Log in to the Reduxi web interface

You can open the Reduxi web interface in two ways:

Remote
📱
Reduxi app
Via tunnel connection · works from anywhere
🖥️
Web browser
In the local network · via IP address or reduxi.local
📱 5.1 Via the Reduxi app
1
Open the app and log in
Launch the Reduxi app on your smartphone or tablet and log in with your credentials.
2
Open Reduxi devices
Tap the menu icon (three lines, top left) and select Reduxi devices.
3
Activate the tunnel connection
Switch on the tunnel connection and wait a moment until it is active.
4
Open the configurator
Tap Open configurator. The Reduxi web interface opens.

Reduxi app: menu icon (2), Reduxi devices (3), Activate tunnel connection button (4)

Text description of this image

Screenshot of three Reduxi mobile app screens side by side, with cyan boxes and number badges 2 to 4. Left screen (dashboard, dark theme): menu icon at top left marked with a box and badge 2; 'reduxi' logo; tabs 'Real time data' (active) and 'Statistics'; price 5.79 € and temperature 3.2 °C; energy flow diagram with a house in the centre (-1.25 kW) and icons with values 69.0 W, 1.3 kW, 1.1 kW (red ring), -165.0 W with 97 % (red ring) and 0.0 W values at the bottom; tabs 'Power' and 'Energy'; bottom navigation: Dashboard, Diagnostics, Device control, Settings. Middle screen (side menu): 'reduxi' logo, 'Number of locations: 1233', heading 'Reduxi device management', entries '+ Add Reduxi location' and 'Reduxi devices' (marked with a box and badge 3), then 'My profile' and 'About app'. Right screen (device page): Back; picture of a black Reduxi controller with two Ethernet ports; status 'Connected'; card 'Update available': 'New update is available for your Reduxi device.' with button 'Download and install update'; card 'Connect to configurator': 'Tunnel connection enables remote access to your Reduxi configurator, without need to be connected to the same local network.' with button 'Activate tunnel connection' (marked with a box and badge 4); card 'Unit details' with field 'Unit ID'.

Activate the tunnel connection

Reduxi app Open configurator button (step 5) and Reduxi Configurator tunnel connection home screen (step 6)

Text description of this image

Screenshot made of two parts side by side. Left part: Reduxi mobile app screen on a dark background. Top: Back button; picture of a black Reduxi controller with two Ethernet ports and a terminal block; status 'Connected' with a Wi-Fi icon. Card 'Update available': 'New update is available for your Reduxi device.' with button 'Download and install update'. Card 'Connect to configurator' with a key icon: 'Tunnel connection enables remote access to your Reduxi configurator, without need to be connected to the same local network.' and button 'Open configurator', marked with a cyan box and number badge 5. Below: card 'Unit details' with a field 'Unit ID' (value not visible). Right part: Reduxi Configurator opened in a browser, marked with a cyan frame and number badge 6. Header: back arrow, 'Tunnel connection', reload icon. Left sidebar with icons (lightning, chip, lightning bolt, bar chart, gear). Page 'Home' with a green link icon. Green notice: 'New patch available. Click here to apply.' with a close X. Time 09:12:56. Energy flow diagram with a house in the centre (1.700 kW) and icons for grid (0.000 kW), solar (1.700 kW), battery (green, 0.000 kW and 0.800 kW), a device at left (0.900 kW), electric vehicle and a charger or device at bottom. Label 'Energy manager' at the bottom.

Open configurator
🖥️ 5.2 Via a web browser
1
Open the login page
On a device in the same network, open a web browser and enter the controller's IP address or http://reduxi.local.
You can find the controller's IP address in your router's device list or in the Reduxi app under Reduxi devices.
2
Log in
Username: admin · Password: admin (factory default)

Reduxi Configurator login page at address reduxi.local, address bar marked

Text description of this image

Screenshot of the Reduxi Configurator login page in a Chrome browser window. The address bar shows 'Not secure' and 'reduxi.local'; the address bar is marked with a cyan box and an enlarged copy of it (cyan box, text 'Not secure reduxi.local') is shown at the left, connected by a cyan line. Page background: light grey line drawing of a house with solar panels (green), a wall box, an inverter, a car and a charger. Top left: 'reduxi configurator' logo. Login box in the centre with title 'Login', a language selector (English flag, 'English'), a username field and a password field, and a dark 'Login' button.

Reduxi Controller login screen

Reduxi Configurator home screen after login: energy flow with house 24.20 kW, grid 24.20 kW, EV charger 31.00 kW

Text description of this image

Screenshot of the Reduxi Configurator web interface after login, light theme. Top left: 'reduxi configurator' logo. Header bar: 'Home' at left, green 'Connected' status at top right. Left sidebar: expanded section 'Devices' with a list of entries, then collapsed sections 'Manager' and 'Configuration' and 'Settings'. Main area: energy flow diagram. House in the centre with ring, value 24.20 kW. Grid icon at top left, 24.20 kW (red dot on its line). Solar icon at top right, value '-'. Left icon (battery or device), 6.700 kW (green dot on its line). Right icons (battery storage and a device), values '-'. EV charger icon at bottom left, 31.00 kW. A further device icon at bottom right. Label 'Energy manager' below the house.

Controller web interface after login

6 Add the Schrack charger to Reduxi

Once the charger is wired and configured (Point 4), add it as a new device in the Reduxi web interface.

6.1 Basic settings

1
Click + Add device
In the Reduxi web interface, select + Add device.
2
Define the device
Device type: EV Charger
Type: Schrack CION (Home / Semipublic) or Schrack CION Pro
Name: any name, e.g. Schrack i-CHARGE CION
Confirm with Next.

Reduxi Configurator menu with Add device button highlighted under Devices

Text description of this image

Screenshot of the left navigation menu of the Reduxi Configurator (logo reduxi Configurator at the top). Section Devices (expanded, minus sign) lists two device icons: a car icon and a power pylon icon. Below them the entry + Add device is highlighted with a cyan box. Further menu entries: Strategies (plus sign), Utility Rate Plan, Settings (plus sign).

+ Add device

Configurator basic settings: device type EV charger, type Schrack i-CHARGE CION PRO option

Text description of this image

Screenshot of the Reduxi Configurator add device wizard, step 1 Basic settings (step 2 is Communication channel, greyed out). Fields: Device type *: EV charger; Type *: Schrack i-CHARGE CION, with the dropdown list open showing one dark highlighted option: Schrack i-CHARGE CION PRO; Name *: Schrack i-CHARGE CION. Buttons: Back (left), Next (right, dark).

Device type, type and name

6.2 Communication settings

The settings differ depending on the charger model.

🔌 6.2.1 CION Home / Semipublic (Modbus RTU)
Parameter Value
Connection Local Port
Port 1 – the controller's RS485 terminal
Baud rate 57600
Data bits 8
Stop bits 1
Parity None
Modbus Unit ID 1 – must match the bus address set with DIP switches 3 and 4 (see ⁠Point 4.1.2⁠)
Auto start charging session No (default) – with Yes, a charging session starts as soon as a vehicle is plugged in, without authorisation (e.g. RFID card)
Configurator communication settings: local serial port RS-485 port 1, 57600 bits/s, unit ID 1
Text description of this image

Screenshot of the Reduxi Configurator form Communication channel and device configuration (step 2 of adding a device). Fields: Connection *: Local serial port; Port *: RS-485 port 1; Baud rate *: 57600 bits/s; Data bits *: 8; Stop bits *: 1; Parity *: None; Modbus unit ID *: 1; Auto start charging session *: No (helper text below the field: Start charging session without authorization). Buttons at the bottom: Back (left), Test communication and Done (right, dark).

Communication settings for CION Home / Semipublic
🌐 6.2.2 CION Pro (Modbus TCP)
Parameter Value
Connection TCP/IP
IP IP address of the CION Pro (fixed via DHCP reservation, see Point 4.2.1)
Port 502
Modbus Unit ID 1 (default)
Configurator communication settings: TCP/IP, IP 192.168.50.243, port 502, unit ID 1
Text description of this image

Screenshot of the Reduxi Configurator form Communication channel and device configuration for a network connection. Fields: Connection *: TCP/IP; IP *: 192.168.50.243, with dark button Scan for IP on the right; Port *: 502, with dark button Test port on the right; Modbus unit ID *: 1. Buttons at the bottom: Back (left), Test communication and Done (right, dark).

Communication settings for CION Pro

Find the IP address with IP scan

If you don't know the charger's IP address, click the IP scan button to the right of the IP field. All devices in the network are listed together with their manufacturer.

ℹ️

Look for "Bender" The scan identifies devices by the manufacturer of their network chipset. Schrack chargers use charging electronics from Bender – so look for Bender in the list. If you are unsure, try the listed IPs one by one with the communication test (see ⁠Point 6.3⁠).

Reduxi Industrial IP field (empty) with the Scan for IP button highlighted in a cyan box

Text description of this image

Cropped screenshot of a form field in the Reduxi Industrial local web interface, light theme: label "IP *", an empty input field and, at its right end, a dark button "Scan for IP" highlighted by a cyan rectangle.

IP scan button next to the IP field

IP scan result row: 192.168.8.13, Bender GmbH, Schrack i-CHARGE CION PRO, Select IP

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Screenshot of one row of the IP scan result table in the Reduxi Configurator (narrow crop). Columns visible: IP, manufacturer, device name, action button. Row: 192.168.8.13; Bender GmbH & Co.KG (printed exactly like this, highlighted with a cyan box); Schrack i-CHARGE CION PRO; button + Select IP. The bottom edge of a button from the row above is partly visible at the top.

Scan results – Schrack chargers appear as Bender

6.3 Test communication

Click Test communication to check whether the Reduxi Controller can read data from the charger.

Reduxi Configurator button bar with Test communication button marked
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Screenshot of the bottom button bar of a Reduxi Configurator page. Left: button 'Back'. Right: button 'Test communication' (marked with a cyan box) and dark button 'Done'.

Test communication button

✅

Test successful Close the results window and confirm your entries with Done.

Test communication dialog: Successful readout from device, state name CABLE_EVSE

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Screenshot of the Reduxi Configurator dialog Test communication with a close button (x) at the top right. Result text in green: Successful readout from device. Then the lines: Current L1: 0.0 A; Current L2: 0.0 A; Current L3: 0.0 A; Error: false null; Import - active power: 0 W; Max. current per phase: 32 A; State code: 1 null; State name: CABLE_EVSE null. Dark button at the bottom right: Close.

Successful test result

Reduxi Configurator communication channel: TCP/IP, IP 192.168.50.243, port 502, Done button marked

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Screenshot of the Reduxi Configurator page 'Communication channel and device configuration'. Connection *: TCP/IP (dropdown). IP *: 192.168.50.243, with button 'Scan for IP'. Port *: 502, with button 'Test port'. Modbus unit ID *: 1. Buttons at the bottom: Back (left), Test communication and Done (right). The Done button is marked with a cyan box.

Confirm with Done

⚠️

Test failed Close the results window and check the wiring (RTU) or network connection (TCP), the Modbus settings on the charger and the communication settings in the Reduxi web interface. Then repeat the test. See also ⁠Common issues⁠.
Test communication dialog: Unable to communicate with 10.10.0.201 on port 1502
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Screenshot of the Reduxi Configurator dialog Test communication with a close button (x) at the top right. First box: Unable to communicate with device. Second box (log text): Unable to communicate with 10.10.0.201 on port 1502. Check if service is enabled on device, port number is correct and device is reachable on the network. PING 10.10.0.201 (10.10.0.201) 56(84) bytes of data. --- 10.10.0.201 ping statistics --- 2 packets transmitted, 0 received, 100% packet loss, time 1015ms. Dark button at the bottom right: Close.

Unsuccessful test result

7 Check readings & enable control

7.1 Check the readings

In the Reduxi web interface, open Devices → Schrack CION → Last measurement.

Reduxi Cloud last measurements of Schrack i-CHARGE CION PRO: Connected, Auto, state CABLE_EVSE
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Screenshot of the Reduxi Cloud device page Last measurements of the device named Schrack i-CHARGE CION PRO Parkplatz_10 (breadcrumb Devices / ...). Top right: green status Connected. Tabs: Last measurements (active), Analyze, Archive, Details. Card Control type: buttons Auto (selected, turquoise), Manual, Off; timestamp 10. 03. 2026 11:53:19. Card Current: Current L1: 0.00 A; Current L2: 0.00 A; Current L3: 0.00 A; Max. current per phase: 32.00 A; Per phase current setpoint: 7.25 A (each with timestamp 10. 03. 2026 11:53:23). Card Other (timestamps 10. 03. 2026 11:53:22 to 11:53:23): Communication error: OFF; Control type: AUTO; Error: OFF; State code: 1; State name: CABLE_EVSE. Card Power: Import - active power: 0.0 kW; Max. active power: 11.0 kW; Min. active power: 5.0 kW (timestamp 10. 03. 2026 11:53:23). Card Energy: Import active energy: 15.0 kWh (timestamp 10. 03. 2026 11:53:23).

Last measurement of the Schrack CION
What you see Meaning
COM without error, values are read Communication works.
COM shows an error, all values are 0 No communication – the settings do not match. Check Point 4 and Point 6.2, or see Common issues.

7.2 Enable control by Reduxi

Open Devices → Schrack CION and set the control type to AUTO. Only then do the commands of the Reduxi strategy reach the charger.

7.3 What happens next

With control type AUTO, the Reduxi Controller adjusts the charging current according to the active strategy – for example to stay below the grid connection limit or to charge with PV surplus.

ℹ️

Prerequisite: grid meter Load management only works if the energy meter / smart meter at the grid connection point is already set up in the Reduxi web interface and delivers values.

Next step: choose and configure the strategy – see Strategies for the Reduxi Controller. For several chargers or sub-distributions, see Multi-level DLM execution (both under Related articles).

✓ Summary

Preparation (Points 1–3): Have the Schrack manual, a Reduxi Controller, a grid meter and a CION charger with the latest firmware ready. The charger model decides the connection: CION Home / Semipublic via Modbus RTU, CION Pro via Modbus TCP.

Charger configuration (Point 4): RTU – wire the RS485 connection and set DIP switches 1 and 2 to OFF; switches 3/4 set the bus address (ON/OFF = address 1). TCP – reserve a fixed IP for the CION Pro and, under „Lastmanagement“, set the Modbus TCP server to Ein, port 502, register set TQ-DM100, then restart.

Add to Reduxi (Points 5–6): Open the Reduxi web interface via the Reduxi app (tunnel) or a browser, add an EV Charger of type Schrack CION / CION Pro, enter the communication settings and run the communication test.

Go live (Point 7): Check the last measurement (no COM error), set the control type to AUTO and configure the strategy. The grid meter must already be set up.

→ Common issues

Issue Solution
Communication test fails – CION Home / Semipublic (RTU) Check the RS485 wiring (A/B not swapped), DIP switches 1 and 2 set to OFF, and that the Modbus Unit ID matches the bus address from DIP switches 3 and 4 (factory setting OFF/OFF = address 4). Port 1, baud rate 57600, 8N1.
Communication test fails – CION Pro (TCP) Make sure the charger and controller are in the same network and the IP is correct. In the charger's „Lastmanagement“ menu: Modbus TCP server Ein, port 502, register set TQ-DM100 – and restart the charger after saving.
Connection worked, then stopped (CION Pro) The charger probably received a new IP address from the router. Reserve a fixed IP in the router and enter it in the Reduxi web interface.
Charger IP address unknown Use the IP scan next to the IP field and look for Bender, or check the device list in your router.
Can't open the controller via reduxi.local Enter the controller's IP address instead (router device list or Reduxi app → Reduxi devices), or use the tunnel connection in the Reduxi app.
Readings are shown, but the charger doesn't follow the strategy Set the control type to AUTO under Devices → Schrack CION and check that a strategy is active and the grid meter delivers values.

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