Control/Status Byte - WAGO -I/O-SYSTEM 750 Manual

90 Appendix
10.4.1

Control/Status Byte

The control byte has the following structure:
Table 54: Control Byte
Bit 7
1
During register communication, the register query response is contained in the
status byte.
Table 55: Status Byte
Bit 7
1
The register data is transferred in the subsequent 2 bytes (byte 1 and byte 2) of the
internal bus process image.
Bit 6 Bit 5
0 = Read Register
1 = Write Register
Bit 6 Bit 5
reserved
Control Byte
Bit 4 Bit 3
Register number
Status Byte
Bit 4 Bit 3
Register number (Acknowledgement)
Version 1.2.0, valid from FW/HW-Version 01/01
WAGO-I/O-SYSTEM 750
750-658 CAN Gateway
Bit 2 Bit 1
Bit 2 Bit 1
Manual
Bit 0
Bit 0