S5-95U, SINEC L2 Data Transmission Using Cyclic I/O
Cyclical Program for Stations 40, 41, and 42 (ZP Slaves)
The structure of the programs is identical for the three ZP slaves. It is represented only once in the
following section.
The status byte for the ZP slave is flag byte FY100. ZP DB for the ZP slave is DB100.
Proceed as follows:
Assign parameters for programmable controller 2 (station 40), programmable controller 3
(station 41), and programmable controller 4 (station 42) as ZP slaves as described in section
7.2. The only parameters you need to adapt specifically for each programmable controller are
TLN (station number), ZPSA, and ZPSE.
Program the individual blocks as described in the following section.
Transfer blocks OB1 and DB100 to programmable controller 2 (station 40), programmable
controller 3 (station 41), and programmable controller 4 (station 42).
OB1 for PLC 2 (ZP Slave) Explanation
SEGMENT 1 0000
0000 :
Monitoring of the ZP data exchange via STB bit
0001 : A F 100.7 ‘Error at ZP data exchange with
0002 : . ZP master’
0003 : . Specific reaction to error via
0004 : . user program
0005 : BE
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DB100 for PLC 2 (ZP Slave) Explanation
***********************************
1: KH = A011;
.
. ZP output area (ZP slave 40) to ZP master
.
10: KH = 10F2;
***********************************
11: KH = 1001;
.
. ZP input area from ZP master
.
20: KH = 9B11;
***********************************
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Set the operating mode switches of the ZP master and the three ZP slaves to RUN.
Check the data transmission. This is done best with a programmer: Connect each
programmable controller to a programmer and display the data blocks and the status bytes.
Refer also to section 3.3 “Starting up a System”.
Appendix 5 gives you information on cycle delay times in the programmable controllers due to data
transmission.
EWA 4NEB 812 6112-02
7-15
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