The Series 90 Triplex Communications enabler supports reading and writing point data to the Series 90-70 and Series 90-30 controllers.

Note: If you add a block to a programmable controller or resize domains, you must stop and restart the Series 90 Triplex Communications enabler in order for it to see the changes.

Data may be read from the following memory types:

Memory Type	Description	Memory Type	Description
%AI	Analog Input Table	%Q	Discrete Output Table
%AQ	Analog Output Table	%R	Register Memory
%G	Genius Seamless	%S	System Fault Table
%I	Discrete Input Table	%SA	Special Contacts A
%L	Local Memory *	%SB	Special Contacts B
%M	Discrete Internal	%SC	Special Contacts C
		%T	Discrete Temporary

* %L may only be used on Series 90-70

Data may be written to the following memory types:

Memory Type	Description	Memory Type	Description
%AI	Analog Input Table	%L	Local Memory *
%AQ	Analog Output Table	%M	Discrete Internal
%G	Genius Seamless	%Q	Discrete Output Table
%I	Discrete Input Table	%R	Register Table
		%T	Discrete Temporary

* %L may only be used on Series 90-70

Caution: Do not write data to the system registers (%S, %SA, %SB, and %SC). Doing so may interfere with the normal operation of the programmable controller.

More information

    Series 90 Triplex installation verification procedures.

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