Siemens SENTRON ATC6300 - Page 155

MODBUS communication
11.4 MODBUS functions
3KC ATC6300 transfer control device
Manual, 03/2018, L1V30535632002A-01
153
Master message
Slave address
08h
Function
07h
LSB CRC
47h
MSB CRC
B2h
The following table shows the meaning of the response of the ATC6300.
BIT
Meaning
0
OFF / RESET operating mode
1
Manual operating mode
2
Auto operating mode
3
Test operating mode
4
ATC in fault mode
5
AC supply OK
6
DC supply OK
7
Global alarm enabled
Function 16: Preset multiple register
With this function, several parameters can be modified with a single message, or a value
longer than one register can be preset.
Querying of the master:
Slave address
08h
Function
10h
MSB register address
20h
LSB register address
01h
Number of MSB registers
00h
Number of LSB registers
02h
Number of bytes (double that of the above)
04h
MSB data
00h
LSB data
00h
MSB data
00h
LSB data 00h
LSB CRC
85h
MSB CRC 3Eh