Process interfacing via an automation system (PLC, PC)
10.5 Controlling the I/O interface "DI/DO"
SIMATIC MV420 / SIMATIC MV440
Operating Instructions, 04/2013, A5E02371045-06
295
Output signals
Name Function LED
IN_OP In operation:
• 0 = error message is displayed.
• 1 = reader functioning, no error
TRD Trained:
• In run:
– 0 = Selected program has not been saved.
– 1 = Selected program has been saved.
• When saving program (TRN=1):
– 0 = Save program active.
– 1 = acknowledgment signal (RDY=0)
RDY Ready:
• 0 = startup of reader or reader in stop
• 1 = 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.
Displayed by
LED1 or LED2
according to your
parameter
settings
10.5.2 Selecting modes
The following modes are available:
● Select program
● Save program
● Start processing
You will find a description of the modes in operator control of the reader.
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