Common Cpu Features; Features Shared By All Pacsystems Cpu Models - GE PACSystems RX7i Reference Manual

Chapter 2. CPU Features & Specifications
2.1

Common CPU Features

2.1.1 Features Shared by All PACSystems CPU Models

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Programming in Ladder Diagram, Function Block Diagram, Structured Text and C.
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Floating point (real) data functions.
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Configurable data and program memory.
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Non-volatile built-in flash memory for user data (program, configuration, register data, and
symbolic variable) storage. Use of this flash memory is optional.
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Configurable RUN/STOP Mode switch.
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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).
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Up to 512 program blocks. Maximum size for a block is 128KB.
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Auto Located Symbolic Variables, which allows you to create a variable without specifying a
reference address.
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Bulk memory area accessed via reference table %W. The upper limit of this memory area can be
configured to the maximum available user RAM.
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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.
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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.)
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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.
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In-system upgradeable firmware for CPU
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Indirect mechanism for upgrading firmware in backplane modules via the CPU.
18 PACSystems* RX7i, RX3i and RSTi-EP CPU Reference Manual GFK-2222AD