Emerson PACSystems RX3i - A-4 User Memory Allocation; A-5 Items that Count against User Memory

PACSystems™ RX3i and RSTi-EP CPU Reference Manual Appendix A
GFK-2222AK October 2019
Serial I/O, SNP & RTU Protocols 221
Timed Interrupt Performance and Sweep Impact Times for a 0.001s Timed
Interrupt Block
Sweep Impact Item
CPU310
(µs)
CPU315
CPU320
(µs)
CPE010
(µs)
CPE020
(µs)
CPE030
(µs)
CPE040
(µs)
Timed interrupt sweep impact
87.3
26.2
88.6
28.0
31.2
23.3
Minimum interrupt period
Average interrupt period
Maximum interrupt period
908.3
1000.0
1081.2
969.8
1000.0
1030.8
951.4
1005.5
1056.6
946.0
999.7
1054.0
922.8
1000.0
1077.0
973.0
999.9
1026.9
A-4 User Memory Allocation
User Memory Size is the number of bytes of memory available to the user for PLC applications.
Model
User Memory Size (MB)
IC695CPE302
2MB
IC695CPE305
5MB
IC695CPU310, IC695CPE310, IC698CPE010, IC698CPE020, IC698CRE020
10MB
IC695CPU315
20MB
IC695CPL410, IC695CPE400, IC695CPE330,
IC695CPU320, IC695CRU320
64MB
IC698CPE030, IC698CRE030
IC698CPE040, IC698CRE040
64MB
EPSCPE100
1MB
EPSCPE115
1.5MB
For a list of items that count against user memory, see below.
A-5 Items that Count Against User Memory
The following items count against the CPU memory and can be used to estimate the
minimum amount of memory required for an application. Additional space may be
required for items such as Advanced User Parameters, zipped source files, user heap, and
published symbols.
Register Memory Size (%R)
Bytes = %R references configured  2