Chapter 2. CPU Features & Specifications
18 PACSystems* RX7i, RX3i and RSTi-EP CPU Reference Manual GFK-2222AD
2.1 Common CPU Features
2.1.1 Features Shared by All PACSystems CPU Models
â–ª Programming in Ladder Diagram, Function Block Diagram, Structured Text and C.
â–ª Floating point (real) data functions.
â–ª Configurable data and program memory.
â–ª Non-volatile built-in flash memory for user data (program, configuration, register data, and
symbolic variable) storage. Use of this flash memory is optional.
â–ª Configurable RUN/STOP Mode switch.
â–ª Embedded serial and/or Ethernet communications (refer to comparison charts in RX3i CPU
Features and Specifications, RX7i CPU Features and Specifications and RSTi-EP CPU Features and
Specifications).
â–ª Up to 512 program blocks. Maximum size for a block is 128KB.
â–ª Auto Located Symbolic Variables, which allows you to create a variable without specifying a
reference address.
â–ª Bulk memory area accessed via reference table %W. The upper limit of this memory area can be
configured to the maximum available user RAM.
â–ª 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.
â–ª 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 Proficy Logic
Developer Getting Started, GFK-1918.)
â–ª 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.
â–ª In-system upgradeable firmware for CPU
â–ª Indirect mechanism for upgrading firmware in backplane modules via the CPU.