Bender B 9506 1021, Руководство пользователя

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Modbus process image in the memory of the COM461MT
57 COM461MT_D00011_00_M_XXEN/05.2013
7.5 Modbus control commands
Commands can be sent to BMS devices by an external application (e.g. data
display software).
Control via Modbus can be enabled or disabled on the "Settings" browser
menu.
Command structure
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 there is no external BMS bus, enter value "1" in this register.
 
If a BMS channel number is not required, enter value "0" (zero) in this
register.
Reading register:
 
To read use function code 0x04 "Read Input Registers".
Possible response in register "Status":
Write Read
Word 0xFC00 0xFC01 0xFC02 0xFC03 0xFC04
External
BMS bus
address
Internal
BMS bus
address
BMS channel Command Status
0 Busy Command is being processed.
1 Error An error has occurred.
2 Ready Command has been processed successfully.