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ISM4 INSTALLATION & PROGRAMMING MANUAL
28
RS232 Triggered Commands
Externally, the ISM4 will behave in exactly the same manner as described in the Sections: System ON Mode and
System OFF Mode, when triggered by RS232 Trigger Commands. Internally if the ISM4 ‘sees’ the RS232
Source 1 ON Command it will look at the state of Source 1. If it is OFF the ISM4 will enter System ON Mode as
described. Conversely, if the ISM4 ‘sees’ the RS232 Source 1 OFF Command it will look at the state of Source
1. If it is ON the ISM4 will enter System OFF Mode as described. If the ISM4 ‘sees’ the RS232 Toggle Power
Command, it will look at Source 1 determine the state (ON or OFF) and output the opposite state macro.
Please Note that unlike the case of a “Sense In” trigger on Source 1, the IR content of Command Structure
number 1 on either the ON and OFF macro will be executed.