WAGO -I/O-SYSTEM 750 Series Manual page 34

34 • 750-655 [AS-Interface master module]
Mailbox commands
Selection of channels 1 and 2 (A/B flag = 0):
Byte 1
Byte 2
Byte 3
Byte 4
...
Byte 6
Byte 1
...
Byte 6
The mailbox call is not answered with the current analog values, as the toggle
flag has not been set.
Setting the toggle flag:
Byte 1
Byte 2
Byte 3
Byte 4
...
Byte 6
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
The values for channels 1 and 2 appear in the response.
Request: RD_7X_IN
0x50 (RD_7X_IN)
0x00 (Toggle flag = 0, A/B flag = 0)
0x1D (Slave address 29)
0x00
...
0x00
Response
0x00
...
0x00
Request
0x50
0x80 (Toggle flag = 1, A/B flag = 0)
0x1D (Slave address 29)
0x00
...
0x00
Response
0x50
0x80 (Toggle flag = 1, no error)
Analog channel 1 high byte, hex
Analog channel 1 low byte, hex
Analog channel 2 high byte, hex
Analog channel 2 low byte, hex
WAGO-I/O-SYSTEM 750
I/O Modules