Control- And Status Byte At Register Communication - WAGO 750-645 Manual

44 • 750-645 [2AI/2DO VIB VRMS/SPM Multi]
Setting the 750-645 Module Using Register Communication
The values to be set are written to the output data bytes D0 and D1 and can be
read back with the input data bytes D0 and D1.
Please note
After writing to the registers, the set values should be verified by reading the
registers.
The corresponding bits of the control byte are mirrored in Bit0 to Bit 5 and Bit
7 of the status byte.
Please note
After writing to the registers, the password register 31 must be reset with
'0x0000'. Otherwise write access to these registers is possible until the supply
voltage is disconnected.

4.1.1.8.1 Control- and Status Byte at Register Communication

The following tables show the assignment of the control and status bytes.
REG_
COM
Register
number
R/W
REG_COM
REG_
COM
Register
number
R/W
REG_COM
Bit 7 Bit 6 Bit 5
R/W
Register number of selected function (see Table "Setting parameters")
0: Read access
1: Write access
1: Register communication
Bit 7 Bit 6 Bit 5
R/W
Register number of selected function (see Table "Setting Parameters")
0: Read access
1: Write access
1: Register communication
Control byte C0
Bit 4 Bit 3
Register number
Control byte C1
Bit 4 Bit 3
Register number
Bit 2 Bit 1 Bit 0
Bit 2 Bit 1 Bit 0
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