Comparison of the CX-Simulator and SYSMAC CS/CJ–series PLCs Section 1-7
20
Item CS/CJ-series PLC CX-Simulator
Data Areas Index Registers IR0 to IR15 Same as CS/CJ-series PLC.
Data Registers DR0 to DR15 Same as CS/CJ-series PLC.
Arithmetic Flags
(such as RE and
EQ)
Condition Flags:
In the CS/CJ-series CPU Unit these Flags are
in a separate area and are specified by labels
rather than addresses. With the CX-
Programmer, these are specified using global
symbols, such as “P_Instr_Error “ and
“P_Equals." With a Programming Console, they
are specified using “ER,” “=,” etc.
Same as CS/CJ-series PLC. (The
Programming Console can not be
used.)
Clock Pulses Clock Pulses:
In the CS/CJ-series CPU Unit these pulses are
in a separate area and are specified by labels
such as “1s” and “0.1s” rather than addresses.
Same as CS/CJ-series PLC.
PLC setup Special Area In the CS/CJ-series CPU Unit, the PLC Setup is
not stored in the DM Area, but a separate area
(the Parameter Area) which is not a part of I/O
memory.
The PLC Setup is edited with CX-Programmer
in a table format and user-friendly dialogue.
Individual PLC Setup addresses can also be
edited with a Programming Console.
Same as CS/CJ-series PLC. (The
Programming Console can not be
used.)
Refer to 9-3 I/O Memory Alloca-
tion.
Instruction
variations
Up-differentiation Available Same as CS/CJ-series PLC.
Down-
differentiation
Available for LD, AND, OR, RSET, and SET Same as CS/CJ-series PLC.
Immediate
refreshing
Available for LD, LD NOT, AND, AND NOT, OR,
OR NOT, OUT, OUT NOT, RSET, SET, KEEP,
DIFU, DIFD, CMP, CPS, and MOV
Same as CS/CJ-series PLC.
(Immediate refreshing is not per-
formed.)
Up-differentiation
and immediate
refreshing
Available for LD, AND, OR, RSET, SET, and
MOV
Same as CS/CJ-series PLC.
(Immediate refreshing is not per-
formed.)
Instruction
variations
Down-
differentiation and
immediate re-
freshing
Available for LD, AND, OR, RSET, and SET Same as CS/CJ-series PLC.
(Immediate refreshing is not per-
formed.)
Instruction operand data
format
Basically operands are specified in binary.
In XFER(070), for example, the number of
words is specified in binary (0001 to FFFF or 1
to 65,535 decimal). Specifying data in binary
increases the setting range about six-fold.
Same as CS/CJ-series PLC.
Specifying operands requiring
multiple words
If an operand requiring multiple words is speci-
fied at the end of an area so that there are not
enough words left in the area for the operand,
the instruction can be executed and the Error
Flag will not turn ON. The program, however, is
checked when transferred from the CX-
Programmer to the CPU Unit and cannot be
transferred with incorrect operand specifica-
tions. Such programs also cannot be read from
the CPU Unit.
Same as CS/CJ-series PLC.
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