Siemens SIMATIC TIWAY 1 Especificaciones Pagina 135

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Appendix B
Peer Master Example
B–8
Peer Master Example
Step 3: Create the Communications Programs
With peer networks, you need a communications program in both stations. Each
program contains the necessary instructions to initiate the data requests.
For peer station #1, well use 8 switches on the input simulator to set a bit pattern that
will be written to an output module on peer station #2.
Goal: Write a bit pattern from an input module (X0 X7) to peer station #2.
Peer Station #1 Peer Station #2
Write Command
X0 X7 Y0 Y7
For peer station #2, we want to read a V memory location from peer station #1.
Goal: Read 1 V memory location from peer station #1.
Master Station #1 Master Station #2
Read Command
V0
MSB LSB
015
V2000
MSB LSB
015
Two Programs are
Required
Peer Station #1
Program
Description
Peer Station #2
Program
Description
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