236 I/O Modules WAGO-I/O-SYSTEM 750
758-874/000-131 WAGO-I/O-IPC-C6
Manual
Version 1.0.0
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18.2.4 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 to the structure of the Control/Status byte
For detailed information about the structure of a particular module’s control/status
byte, please refer to that module’s manual. Manuals for each module can be found
on the Internet under: http://www.wago.com
.
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18.2.4.1 2 Channel Analog Output Modules
750-550, -552, -554, -556, -560, -562, 563, -585, (and all variations),
753-550, -552, -554, -556
Table 101: 2 Channel Analog Output Modules
Output Process Image
Byte Destination
Offset
High Byte Low Byte
Description
0 D1 D0 Output Value Channel 1
1 D3 D2 Output Value Channel 2
18.2.4.2 4 Channel Analog Output Modules
750-553, -555, -557, -559,
753-553, -555, -557, -559
Table 102: 4 Channel Analog Output Modules
Output Process Image
Byte Destination
Offset
High Byte Low Byte
Description
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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