WAGO-I/O-SYSTEM 750
I/O Modules 381
750-882 Media Redundancy ETHERNET Controller
Manual
1.5.0
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 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 443: 2 Channel Analog Output Modules
Output Process Image
Instance
Byte Destination
Description
High Byte
Low Byte
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 444: 4 Channel Analog Output Modules
Output Process Image
Instance
Byte Destination
Description
High Byte
Low Byte
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).