Omron FZ4 Series User Manual page 502

<Response>
RESET
Restart the controller.
<Command format>
<Response format>
OFF
SCENE or S
7
Acquires scene No.
Acquires the current scene No.
<Command format>
<Response format>
When processing is performed normally
When processing is not performed normally
<Parameters explanation>
Scene No.
(Example)
When scene 0 is being used
500 Controlling/Outputting through Serial Communication (Non-procedure)
The acquired scene No. (currently used scene No.) is output as a response (0 to 31).
FZ4 User's Manual