PACSystemsâ„¢ RX3i and RSTi-EP CPU Reference Manual Section 2
GFK-2222AK October 2019
CPU Features & Specifications 28
Max Number of Program Blocks
30
Discrete Reference Memory (%I, %Q)
31
Analog Reference Memory (%AI, %AQ)
21
Bulk Reference Memory (%W)
21
Managed Memory (Symbolic + I/O
Variables)
21,32
Function Block Diagram (FBD)
PID Built-In Function Block
"C" Language External Blocks
Support for up to 768 blocks requires firmware release 9.70 or later and PME 9.50 SIM 13 or later.
Note: Whenever the size of any reference memory is changed, the content of the corresponding reference memory is automatically cleared.
For discussion of memory types and how they are managed, refer to PACSystems RX3i CPU Programmer’s Reference Manual, GFK-2950 Section 3.