Technical data

Fieldbus Controller 750-841 • 55
Process Image
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
3.1.4.3.3 Analog Input Modules
The hardware of an analog input module has 16 bits of measured analog data
per channel and 8 bits of status. However, the Ethernet controller does not
have access to the 8 status bits. Therefore, the Ethernet controller can only
access the 16 bits of analog data per channel, which are grouped as words and
mapped in Intel format in the Input Process Image.
When digital input modules are also present in the node, the analog input data
is always mapped into the Input Process Image in front of the digital data.
1 Channel Analog Input Module
750-491
Byte Destination
Offset
High Byte Low Byte
Remark
0 D1 D0 Measured Value U
D
1 D3 D2 Measured Value U
ref
2 Channel Analog Input Modules
750-452, -454, -456, -461, -465, -466, -467, -469, -470, -472, -473, -474, -475,
-476, -477, -478, -479, -479/000-001, -480, -480/000-001, -483, -485, -492
Byte Destination
Offset
High Byte Low Byte
Remark
0 D1 D0 Measured Value Channel 1
1 D3 D2 Measured Value Channel 2
4 Channel Analog Input Modules
750-453, -455, -457, -459, -460, -468
Byte Destination
Offset
High Byte Low Byte
Remark
0 D1 D0 Measured Value Channel 1
1 D3 D2 Measured Value Channel 2
2 D5 D4 Measured Value Channel 3
3 D7 D6 Measured Value Channel 4