Table 21: Input Process Image Or Profibus Telegram; Table 22: Output Process Image Or Profibus Telegram; Table 23: Control Byte C0 - WAGO I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-484 2AI 4-20mA HART Ex i
Table 21: Input Process Image or PROFIBUS Telegram "...6-Byte Mailbox"
Offset
0
1
2
3
4
5
6
7
8
9
10
11
Table 22: Output Process Image or PROFIBUS Telegram "...6-Byte Mailbox"
Offset
0
1
2
3
4
5
6
7
8
9
10
11

Table 23: Control Byte C0

Bit 7
-
In the "6-Byte Mailbox" operating mode, only 1 common control byte is available
for both logical channels. For this reason, there is no more space in the status
byte to signal a wire break or short circuit. A short circuit or wire break is still
signaled by an under flow or overflow.
PROFIBUS Telegram Input Process Image or Input Data
Byte Designation
S0
Internal Use
MBX_RES
AI0
AI1
PROFIBUS Telegram Output Process Image or Output Data
Byte Designation
C0
Internal Use
MBX_REQ
-
Bit 6 Bit 5
- -
Status byte
Used internally
Mailbox response data
Analog input data Channel 1
Analog input data Channel 2
Control byte
Used internally
Mailbox request data
Not used
Control Byte C0
Bit 4 Bit 3
- -
Process Image
Remark
Remark
Bit 2 Bit 1 Bit 0
- -
Manual
Version 1.4.0
33
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