Process Image; Table 14: Process Image; Table 15: Control Byte C0 - WAGO -I/O-SYSTEM 750 Manual

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Process Image

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7 Process Image
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Mapping of process data in the process image of fieldbus systems
The representation of the I/O modules' process data in the process image depends
on the fieldbus coupler/controller used. Please take this information as well as the
particular design of the respective control/status bytes from the section "Fieldbus
Specific Design of the Process Data" included in the description concerning the
process image of the fieldbus coupler/controller used.
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</dg_ The I/O module provides the fieldbus coupler/controller 5 bytes in the input and
output process image via 1 logical channel. The data received from the sensor is
stored in the 3 input bytes (D0 ... D2), starting with the least significant input byte
D0. The input byte (D3) and 4 output bytes (D0 ... D3), as well as the control
byte (C0) are not used. The status byte (S0) is used to display status information
such as sensor and wiring errors (variants 750-630/000-004, /000-005 and /000-
007 only). How many bytes carry status information depends on the variant used
(see Table "Variants" in the section "Information about this Documentation" >
"Scope of Validity").
Processing the status byte by the fieldbus coupler/controller is optional, i.e.,
access or evaluation of the status information depends on the respective fieldbus
system.

Table 14: Process Image

S0
D0
D1
D2
D3

Table 15: Control Byte C0

Bit 7
0
0
Input
Status byte 0
Process data byte 0 (LSB)
Process data byte 1
Process data byte 2 (MSB)
0 (reserved)
Bit 6 Bit 5
0 0
reserved
750-630 SSI Transmitter Interface
C0 Control byte 0
D0 0 (reserved)
D1 0 (reserved)
D2 0 (reserved)
D3 0 (reserved)
Bit 4 Bit 3
0 0
Version 1.2.0, valid from FW/HW-Version 3A/05
WAGO-I/O-SYSTEM 750
Output
Bit 2 Bit 1
0 0
Manual
Bit 0
0