Siemens SENTRON ATC6500 - Data library

MODBUS communication
10.3 MODBUS functions
3KC ATC6500 transfer control device
190 Manual, 05/2019, L1V30538268002A-01
10.3.5 Function 17: Report Slave ID
This function enables the ATC6500 to be identified.
Querying of the master:
Slave address
08h
Function
10h
LSB CRC
85h
MSB CRC
3Eh
Response of the slave
Slave Address
08h
Function
11 h
Counter bytes
08h
Data 01 (Type)
①
76h
Data 02 (Software revision) 01h
Data 03 (Hardware revision)
00h
Data 04 (Parameter revision)
01h
Data 05 (Type of device)
②
04h
Data 06 (reserved)
00h
Data 07 (reserved)
00h
Data 08 (reserved)
00h
LSB CRC B0h
MSB CRC
2Ah
①
118 – 76h = ATC6500
② 4 – 04h = ATC series
Error messages
If the slave contains an incorrect message, it responds with a message consisting of the
queried function with 80Hex, followed by an error code byte. The error codes that are sent to
the master are listed below:
Code
Error
01
Illegal function
02
Invalid address
03
Parameter outside the setting range
04
Version of function not possible
06
Slave is overloaded, the function is not currently available
CRC calculation
Information on the CRC calculation can be found under www.modbus.org in the MODBUS
over Serial Line Specification and Implementation Guide
(http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf
).