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Function Block (Ladder Programming Language) Simulation
CX-Simulator version 1.5 can be used to simulate function blocks that are supported for CS/CJ-series
CPU Units with unit version 3.0 (function block algorithms can be written in the ladder programming
language or in the structured text (ST)). Step execution of instructions contained in ladder programming
language or structured text within a function block, however, is not supported.
Precautions
CX-Simulator version 1.5 can simulate the operations of a CS/CJ-series CPU Unit with version 3.0 on a
personal computer. The simulation, however, operates differently from the actual CS/CJ-series CPU
Unit with unit version 3.0 in the system.
• Processing when using index registers for automatic incrementing or decrementing with se-
quence output instructions. No-protocol communications instructions sent to the serial port of
the Serial Communications Unit will not be executed.
CX-Simulator version 1.5 does not support no-protocol instructions (TXDU(256) and
RXDU(255)) sent to the serial port of the Serial Communications Unit and will not execute these
instructions.
• The Comms Instructions Settings in FB field in PLC Settings is disabled.
The Comms Instructions Settings in FB field (CPU Settings Tab) is a PLC setting specific to the
OMRON FB library. Therefore, this setting is disabled when using CX-Simulator version 1.5.
• Free Running Timers in Auxiliary Area words A000 and A001 are disabled.
The Auxiliary Area word 10-ms Incrementing Free Running Timer (A000) and 100-ms Incre-
menting Free Running Timer (A001) that are supported for CS/CJ-series CPU Units with ver-
sion 3.0 or later cannot be used in simulation operations.
Version 1.6
The changes that have been made from version 1.5 to version 1.6 of the CX-Simulator to enable
support of new functions are explained here.
New PLCs Supported
CX-Simulator version 1.6 supports the following new CPU Units.
Series CPU Unit model
CP CP1H-XA/X
NSJ
(Controller
Section)
G5D (Used for the NSJ5-TQ0@-G5D, NSJ5-SQ0@-G5D,
NSJ8-TV0@-G5D, NSJ10-TV0@-G5D, and NSJ12-TS0@-G5D)
CX-Programmer Simulation Functions
If CX-Programmer version 6.1 or higher and CX-Simulator version 1.6 or
higher are installed, the following CX-Programmer simulation functions can be
used.
• Applicability: Ladder programs or programs in function blocks (ladder pro-
grams or ST)
• Simulation functions: Step execution, continuous step execution, scan
execution, and break-point operation (Note: I/O conditions cannot be set.)
Refer to the CX-Programmer Operation Manual (W446) for details.
Version 1.7
The changes that have been made from version 1.6 to version 1.7 of the CX-Simulator to enable
support of new functions are explained here.
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