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Process interfacing via an automation system (PLC, PC)
10.4 Control with FB79
SIMATIC MV420 / SIMATIC MV440
270
Operating Instructions, 04/2013, A5E02371045-06
10.4.1
Assignment of the interfaces relevant to PROFINET IO
Control byte
Bit no. Corresponds to
signal
Function
0
DISA
Disable: Disables manual keyboard input, program selection and
program saving, error acknowledgment, starting the reader
1
SEL0
Select 0: Program selection bit 0
2
SEL1
Select 1: Program selection bit 1 (when TRN=0) / Save program (when
TRN=1)
3
SEL2
Select 2: Program selection bit 2
4
SEL3
Select 3: Program selection bit 3
5
TRN
Save program: Saves new program.
6
TRG
Trigger: Processing starts on a positive edge.
7
RES
Reset: Reset error.
Note
The SEL0, SEL1, SEL2, SEL3, and TRN signals are effective only when DISA=1.
Summary of Contents for SIMATIC MV420
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