Siemens SIMATIC MV540 H - Page 127

Process interfacing via an automation system (PLC, PC)
9.4 Control with FB 79
SIMATIC MV500
Operating Instructions, 06/2018, C79000-G8976-C494-01
127
Bit
Signal
Description
2 SEL1
1)
Select 1
Program selection bit 1 (with TRN = 0) / save program (with TRN = 1)
3 SEL2
1)
Select 2
Program selection bit 2
4 SEL3
1)
Select 3
Program selection bit 3
5 TRN
1)
Save program
Saves new program.
6 TRG Trigger
Processing starts on a positive edge.
7 RES Reset
Reset error.
1)
The signals only work if "DISA = 1".
Table 9- 34 Assignment of status byte (output signals)
Bit
Signal
Description
0 IN_OP In operation
• 0: Error message is displayed.
• 1: Optical reader functional, no error
1 TRD Program saved
• 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)
2 RDY Ready
• 0: Startup of the optical reader or optical reader in the "Stop"
• 1: Optical reader in "Start"
3 READ Processing result
Code was localized and decoded.
4 MATCH Processing result
Code matches the trained code.
5
N_OK
Code was not legible.
6
-
Current status of the trigger input
7 - Reserved