Precautions When Accessing External Outputs In Controllers - Omron NY532-5400 User Manual

A-6 Precautions When Accessing
External Outputs in Controllers
Observe the following precautions when you access variables that are assigned to external outputs in
an NY-series Controller.
 Precaution on Writing from External Devices, Variables* That Are Assigned to
External Outputs
Any value that is written to a variable* that is assigned to an external output in an NY-series Control-
ler through a tag data link or communications instruction will be overwritten by the execution results
of the user program.
The value that is written from the tag data link or communications instruction will therefore not be
output to the external device.
The following types of variable are assigned to the external outputs.
• The devices variables (or global variables) that are assigned to an I/O port of an EtherCAT output-
slave.
NY-series Industrial Panel PC / Industrial Box PC Built-in EtherNet/IP Port User's Manual (W563)
Appendices
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