WAGO-I/O-SYSTEM 750 XTR
I/O Modules 231
750-352/040-000 FC ETHERNET G3 XTR
Manual
Version 1.3.0
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12.2.5 Analog Output Modules
The hardware of an analog output module has 16 bits of measured analog data
per channel and 8 bits of control/status. However, the coupler/controller with
MODBUS/TCP does not have access to the 8 control/status bits. Therefore, the
coupler/controller with MODBUS/TCP can only access the 16 bits of analog data
per channel, which are grouped as words and mapped in Intel format in the
Output Process Image.
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When digital output modules are also present in the node, the analog output data
is always mapped into the Output Process Image in front of the digital data.
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Information on the structure of control and status bytes
For detailed information on the structure of a particular I/O module’s
control/status bytes, please refer to that module’s manual. Manuals for each
module can be found on the Internet at
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12.2.5.1 2 Channel Analog Output Modules
Table 268: 2 Channel Analog Output Modules
Output Process Image
Offset
Byte Destination
Description
High Byte
Low Byte
0
D1
D0
Output Value Channel 1
1
D3
D2
Output Value Channel 2
12.2.5.2 4 Channel Analog Output Modules
Table 269: 4 Channel Analog Output Modules
Output Process Image
Offset
Byte Destination
Description
High Byte
Low Byte
0
D1
D0
Output Value Channel 1
1
D3
D2
Output Value Channel 2
2
D5
D4
Output Value Channel 3
3
D7
D6
Output Value Channel 4
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