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18 •
750-640 [RTC Module]
Process Image
The control byte includes the following bits:
TR
0
The status byte contains the following bits:
TA
0
2.1.1.7.1
Structure of the Input Data and Output Data
Byte
ID
D0
D1
D2
D3
0
TR
Opcode Instruction code of
Bit 7
Bit 6
Bit 5
0
0
Transmit Request, request to send (toggle flag)
reserved (constant must be set to zero)
Bit 7
Bit 6
Bit 5
0
0
Transmit Acknowledge, transmission confirmation (toggle flag)
reserved (this value is always 0)
Function Request
7
6
5
2
2
2
C
0
0
0
Request parameter byte 0
Request parameter byte 1
Request parameter byte 2
Request parameter byte 3
reserved (value must always be 0).
Transmit-Request
(toggle flag)
the function call
Control Byte
Bit 4
Bit 3
0
0
0
Status Byte
Bit 4
Bit 3
0
0
0
4
3
2
2
2
2
2
0
0
0
Opcode
A changing is followed by a function call.
A changing is followed by a function call.
Bit 2
Bit 1
0
0
Bit 2
Bit 1
0
0
1
0
2
0
TR
WAGO-I/O-SYSTEM 750
Bit 0
TR
Bit 0
TA
I/O-Modules
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