WAGO-I/O-SYSTEM 750
Appendix 103
750-657 IO-Link Master
Manual
Version 1.0.2, valid from FW/HW-Version 02/01
11.2.1
Control/Status Byte
The control byte has the following structure:
Table 66: Control byte
Control byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
0 = Read Register
1 = Write Register
Register number
During register communication, the register query response is contained in the
status byte.
Table 67: Status byte
Status byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1 reserved
Register
number
(Acknowledgement)
The register data is transferred in the subsequent 2 bytes (byte 1 and byte 2) of the
internal bus process image.
