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Commissioning
5.2 Notes on setting up the communication connection
5.2.4
Overview of Modbus, RS485 and Ethernet
Requirement
Modbus communication requires firmware version V2.113 or higher.
Properties
The Wallbox has two interfaces for networking
• An RJ45 socket for Ethernet (cable type: CAT 6 or better). RJ45 copper Ethernet port. This
10/100BASE-T connection enables data rates of up to 100 Mbps and supports the Modbus
TCP/IP protocol. Standard UTP cables of Category 6 or better are recommended at an
industry-standard maximum distance of 100 meters.
• An RS485 interface for Modbus RTU (cable type: Twisted Pair, shielded, 0.5 mm²)
You connect several Wallboxes via Modbus.
NOTE
Safety information
The Modbus protocol is an open protocol and it is the responsibility of the installer to ensure
the security of the wiring of these connections to prevent tampering.
Using the Modbus RTU protocol
VersiCharge AC Wallboxes can act as Modbus devices and make real-time data available via
the Modbus RTU protocol. Higher-level Modbus devices connected to the Wallbox, e.g.
Modbus servers, can perform the following actions:
• Read data
• Write data to the registers of your wallbox
• Change the device configuration
• Initiate control actions
This allows them to:
• Take on the function of Child Modbus devices
• Provide data in real time via the Modbus protocol
Modbus map
The Modbus map is available on request from the Download Center (see also Siemens
Industry Online Support (https://support.industry.siemens.com/cs/de/de/view/109814359)).
50
VersiCharge AC Wallbox Operating Instructions ERK
Operating Instructions, 08/2023, A5E51549696-AC
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Troubleshooting
