Chapter 5: Programming Considerations - Emerson PACSystems RX3i User Manual

User Manual
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Chapter 5: Programming Considerations

This chapter provides additional information on programming considerations and system
resources for the Max-ON RX3i product. In many cases, Max-ON RX3i System Variables have
been predefined to use in application logic in order to interact with the Max-ON RX3i
redundancy driver.
Reserved References
Max-ON RX3i redundancy drivers make use of a small number of variable references. Some
of these references are used for the internal operation of the drivers to hold system state
information. Many are available to your application logic to provide both information on the
system and to control the operation of the redundancy drivers.
I/O References
%I00001
%Q00001 to 2048
%AI00001 to configured limit
%AQ00001 to configured limit
Boolean References
%G00001 to 1024
%G01025 to 1280
%M00001 to 0928
%M00929 to 1024
%M01025 to 4096
%S (all)
%T00001 to 256
Word References
%R00001 to 8000
%R08001 to 16384
%R16385 to configured limit
%W00001 to %W29999
%W30000 to %W50000
System Status Flags
The System Status Flags indicate key operating characteristics of a Max-ON RX3i system.
These flags may be monitored by an HMI to display such things as current Master.
Optionally, the system designer may use the status flags to control the operation of the
application.
Programming Considerations
to 2048 Available to all applications
Available to all applications
Available to all applications
Available to all applications
Available to all applications
Reserved by Max-ON RX3i
Available to all applications
Reserved by Max-ON RX3i
Available to all applications
Available to all applications
Available to all applications
Available to all applications
Reserved by Max-ON RX3i
Available to all applications
Available to all applications
Reserved by Max-ON RX3i
Chapter 5
Oct 2019
47