CPU Features & Specifications 15
Section 2: CPU Features & Specifications
This Section provides details on the hardware features of the PACSystems CPUs and their
specifications.
▪ Common CPU Features
▪ RX3i CPU Features and Specifications
▪ RSTi-EP CPU Features and Specifications
2.1 Common CPU Features
▪ Features are shared by all PACSystems CPU models
▪ Programming in Ladder Diagram, Function Block Diagram, Structured Text and C
▪ Floating point (real) data functions
▪ Configurable data and program memory
▪ Non-volatile built-in flash memory for user data (program, configuration, register
data, and symbolic variable) storage. Use of this flash memory is optional.
▪ Configurable RUN/STOP Mode switch
▪ Embedded serial and/or Ethernet communications (refer to comparison charts in
RX3i CPU Features and Specifications and RSTi-EP CPU Features and Specifications)
▪ Up to 512 program blocks (Refer to Features Shared by Certain PACSystems CPU
Models
▪ Regarding increased block count to 768 for certain CPU models). Maximum size for
a block is 128KB.
▪ Auto Located Symbolic Variables, which allows you to create a variable without
specifying a reference address.
▪ Bulk memory area accessed via reference table %W. The upper limit of this memory
area can be configured to the maximum available user RAM.
▪ Larger reference table sizes, compared to Series 90* CPUs: 32Kbits for discrete %I
and %Q and up to 32K words each for analog %AI and %AQ.
▪ Online Editing mode that allows you to easily test modifications to a running
program. (For details on using this feature, refer to the programming software
online help and PACLogic Developer Getting Started, GFK-1918.)
▪ Bit in word referencing that allows you to specify individual bits in a WORD reference
in retentive memory as inputs and outputs of Boolean expressions, function blocks,
and calls that accept bit parameters.
▪ In-system upgradeable firmware for CPU
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