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CHAPTER 11 PROGRAMMING
11
11.2 Communication Example of when Safety Stations and a Standard Station are Used
11.2.5 Program example
11.2.5 Program example
This section shows a program example.
(1) Safety communication among local stations (safety stations)
(a) Devices used in the program
• Devices used by the user
(b) Program example
1. Create the following program in the project for local stations (safety stations) of station No.1 and
station No.2 using GX Developer.
2. Write the program to the safety CPU modules on the local stations (safety stations) (station No.1
and station No.2), and either reset or power them off and on.
[Online] [Write to PLC]
3. Set the safety CPU modules on the local stations (safety stations) to RUN.
Device Description
M10 Safety station interlock cancel request signal
SD1700.0 Safety station interlock status of local station (safety station) (station No. 1)
SD1720.0 Safety station interlock cancel request of local station (safety station) (station No. 1)
SD1700.1 Safety station interlock status of local station (safety station) (station No. 2)
SD1720.1 Safety station interlock cancel request of local station (safety station) (station No. 2)
Safety communication program with station No. 2
Safety communication program with station No. 1
Safety station interlock with
station No. 2 is released.
Safety station interlock with
station No. 1 is released.
Program for a local station (safety station) of station No. 1
Program for a local station (safety station) of station No. 2
or powering off on