Modbus Control Commands - Bender COMTRAXX CP9 Series Manual

Value Description of parameters:
Register address (unit not displayed)
1011 (0x3F3)
Time
1010 (0x3F2)
Factor multiplication [*]
1009 (0x3F1)
Factor division [/]
1008 (0x3F0)
Baud rate
1007 (0x3EF)

4.2.6 Modbus control commands

Commands can be sent to BMS devices by an external application (e.g. visualisation software).
This functionality can be activated or deactivated via the web user interface.
Command structure
Write
Word 0xFC00
External
BMS bus address
Writing to register:
To write use function code 0x10 "Write Multiple registers".

Start address: 0xFC00

Number: 4 registers

Always set all four registers (word 0xFC00...0xFC03) at the same time. This statement also applies if

individual registers remain unchanged.
If no other subsystem is available, enter value"1" in this register.

If a BMS channel number is not required, enter value "0" (zero) in this register.

You can also generate control commands in the menu "Tools" > "Modbus" >
"Modbus control commands".
34
0xFC01
0xFC02
Internal
BMS channel
BMS bus address
Modbus TCP server
Read
0xFC03
0xFC04
Command Status
CP9xx_D00349_07_M_XXEN/01.2020