26
Process Image
WAGO-I/O-SYSTEM 750
750-493 3-Phase Power Measurement Module
Manual
Version 1.2.0
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4
Process Image
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The 750-493 I/O module provides, on 3 logical channels, a maximum of 9 bytes
input and 9 bytes output process data to a fieldbus coupler/controller. The data to
be sent and received will be stored in up to 6 input and output bytes (D0 ... D5),
i.e. in 3 data words. This means 3 process data are sent.
3 control bytes (C0 ... C2) and 3 status bytes (S0 … S2) are used for selecting
process data and for setting parameters.
Notice that the process data image depends on the used fieldbus coupler/
controller!
Mapping the process data into the process image is specific for the fieldbus
coupler/controller used. You will find both this information and the specific
configuration of the relevant control/status bytes in the manual of the
coupler/controller, section "Fieldbus Specific Configuration of Process Data"
which describes the process image.
4.1
Input and Output Data
Table 15: Input and Output Data
9 Bytes Input Data
9 Bytes Output Data
S0
Status byte 0
C0
Control byte 0
D0
Input data word 1 (LSB)
D0
Output data word 1 (LSB)
D1
Input data word 1 (MSB)
D1
Output data word 1 (MSB)
S1
Status byte 1
C1
Control byte 1
D2
Input data word 2 (LSB)
D2
Output data word 2 (LSB)
D3
Input data word 2 (MSB)
D3
Output data word 2 (MSB)
S2
Status byte 2
C2
Control byte 2
D4
Input data word 3 (LSB)
D4
Output data word 3 (LSB)
D5
Input data word 3 (MSB)
D5
Output data word 3 (MSB)
