188 I/O Modules
WAGO-I/O-SYSTEM 750
750-806 Fieldbus Controller DeviceNet
TM
Manual
Version 2.0.0
Table 156: Input/Output Process Image of the Serial Interfaces with Standard Data Format
Input/Output Process Image
Instance
Byte designation
Remark
n
C/S
Control/status byte
D0
Data bytes
D1
D2
D3
D4
These specialty modules represent 1 x 6 bytes and occupy 1 instance in class
(0x67) and 1 instance in class (0x68).
Serial interface RS-232 / RS-485
750-652
Serial transmission mode:
The data to be sent and received is stored in up to 46
input/output bytes of the process image in serial transmission mode. The data flow
is controlled with the control/status byte. The input bytes form the memory area
for up to 47 characters, which were received by the interface in "Data Exchange"
mode. The characters to be sent are passed in the output bytes.
Table 157: Input/Output Process Image of the Serial Interface, Serial Transmission Mode
Input/Output Process Image
Instance
Byte designation
Remark
n
8 bytes
S0/C0
Control/status byte S0
S1/C1
Control/status byte S1
D0
Data byte 0
D1
Data byte 1
D2
Data byte 2
…
…
D5
Data byte 5
24 bytes
D6
Data byte 6
…
…
D21
Data byte 21
48 bytes
D22
Data byte 22
…
…
D45
Data byte 45
Data exchange mode:
The data to be sent and received is stored in up to 47 input
and output bytes. The data flow is controlled with the control/status byte.
Table 158: Input/Output Process Image of the Serial Interface, Data Exchange Mode
Input/Output Process Image
Instance
Byte designation
Remark
n
8 bytes
S0/C0
Control/status byte S0
D0
Data byte 0
D1
Data byte 1
D2
Data byte 2
…
…
D6
Data byte 6
24 bytes
D7
Data byte 7
