Modbus Standard Device Identification With The Function Code 0X2B - Siemens SENTRON PAC4220 Manual

Appendix
A.1 Modbus
A.1.13

MODBUS standard device identification with the function code 0x2B

Addressing the MODBUS standard device identification
You can use Modbus function code 0x2B on these device identification parameters.
Table A-11 MODBUS standard device identification parameters
Object ID Name
OID 0 Manufacturer
OID 1 Manufacturer device name
OID 2 Firmware version / bootloader version
134
Format Access
String R
String R
String R
Equipment Manual, L1V30827278B-01
PAC4220