Siemens SIMATIC MV440 - Assignment of the Interfaces Relevant to PROFINET IO

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.