Siemens SIMATIC MV500 - 9.5 Controlling the I;O interface DI;DQ

Process interfacing via an automation system (PLC, PC)
9.5 Controlling the I/O interface "DI/DQ"
SIMATIC MV500
196 Operating Instructions, 03/2021, C79000-G8976-C494-05
9.5 Controlling the I/O interface "DI/DQ"
Control signals
Note
Range of functions depends on the
settings in WBM
Note that the control of the reader via the digital inputs/outputs depends on the settings in
the menu "Settings > Communication > Digital I/O" of the WBM.
Table 9- 51 Assignment of control bytes (input signals)
Name
Description
TRG
Trigger
Processing starts on a positive edge.
The optical reader has two freely assignable digital outputs. The following table provides an
overview of the possible output signals.
Table 9- 52 Assignment of status byte (output signals)
Name
Description
IN_OP
In operation
• 0: Error message is displayed.
•
1: Optical reader functioning, no error
TRD
Trained
• In run:
– 0: Selected program is not saved.
– 1: Selected program has been saved.
• With Save program (TRN = 1):
– 0: Save program active.
– 1: Acknowledgment signal (RDY = 0)
RDY
Ready:
• 0: Startup of the optical reader or optical reader in STOP
•
1: Optical reader in run
READ
Processing result
Code was localized and decoded.
MATCH
Processing result
Code matches the trained code.
N_OK
Code was not legible.