24 CC612(4G)_D00325_06_M_XXEN/09.2021
Connection
4.2.1.11 Connectivity to eHZ or Modbus meters and (optionally) meters with an S0 interface
The use of a meter is not mandatory. However, a meter should be used when meter readings are required du-
ring normal operation. An EMH eHZ meter can be used if the meter should be digitally read. The meter is read
by an optical reader attached to the mounting plate of the meter so that it can interface with the optical inter-
face on the back of the meter. The optical reader is then connected to the charge controller with a RJ10 cable.
Modbus RTU can be used instead of an RS-485 based eHZ interface to connect to Modbus meters. Various
Modbus meters are currently supported, see:
www.bender.de/en/supported-energy-meters
.
Additional Modbus meters can be added upon customer request and may be added with each software re-
lease. Supported Modbus meters are listed on the webserver Operator tab.
The Modbus meter interface on the charge controller is shown below:
The system periodically queries the relevant registers of the Modbus meters and uses the meter values to ful-
fill the charge controller functionality. Depending on support by the meter, current, voltage and power are
also obtained directly from the meter as opposed to being calculated based on the increasing energy
amounts reported. If meter readings are required, the baud rate and the slave ID need to be configured direct-
ly on the Modbus meter as follows:
• Baud rate: 9,600 Bd
• Slave ID: 1
• 8N1 (8 data bits, no parity, 1 stop bit)
• For Saia ALE3: 8E1 (8 data bits, even parity, 1 stop bit)
The charge controller can optionally read meters with an S0 interface. These meters can be attached to one of
the available inputs
4.2.1.12 Connection with display and authorization modules
The charge controller features a simple user interface for customer-specific applications.
This interface can connect to the:
• RFID module RFID110-L1 - The RFID module is a separate PCB with status and lighting LEDs and is
designed according to ISO14443A/MIFARE. It is connected to the charge controller using a standard
RJ45 cable.
• RFID module RFID114 - The RFID module is a separate PCB without status and lighting LEDs and is
designed according to ISO14443A/MIFARE. It is connected to the charge controller using a standard
RJ45 cable.
• Display module DPM2x16FP - The display module is also a separate PCB that is used to indicate the
charge controller status information as well as the charging status. It features two RJ45 cable so-
ckets, one which connects to the charge controller and the other which can connect to the RFID
module.
i
Information on the corresponding manuals can be viewed in the order details.
4.2.2 Master device features
Only datagateways with 4G modem feature a SIM card/SIM card slot and an antenna socket.
A
B
