350 I/O Modules
WAGO-I/O-SYSTEM 750
750-880, 750-880/025-000 ETHERNET Programmable Fieldbus Controller
Manual
Version 1.0.1
13.3.4 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
EtherNet/IP does not have access to the 8 control/status bits. Therefore, the
coupler/controller with EtherNet/IP 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.
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.
Each output channel seizes one Instance in the Analog Output Point Object (Class
0x68).
Information
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:
13.3.4.1 2 Channel Analog Output Modules
750-550, -552, -554, -556, -560, -562, 563, -585, (and all variations),
753-550, -552, -554, -556
Table 385: 2 Channel Analog Output Modules
Output Process Image
Byte Destination
Instance
High Byte
Low Byte
Description
n
D1
D0
Output Value Channel 1
n+1
D3
D2
Output Value Channel 2
The output modules represent 2x2 bytes and seize 2 Instances in Class (0x68).
13.3.4.2 4 Channel Analog Output Modules
750-553, -555, -557, -559,
753-553, -555, -557, -559
Table 386: 4 Channel Analog Output Modules
Output Process Image
Byte Destination
Instance
High Byte
Low Byte
Description
n
D1
D0
Output Value Channel 1
n+1
D3
D2
Output Value Channel 2
n+2
D5
D4
Output Value Channel 3
n+3
D7
D6
Output Value Channel 4
The output modules represent 4x2 bytes and seize 4 Instances in Class (0x68).
