11
CJ-series Features Section 1-2
Other Functions
Data Trace Function The content of the specified word or bit in I/O memory can be stored in trace
memory by one of the following methods: scheduled sampling, cyclic sam-
pling, or sampling at execution of TRSM(045).
Fixed Cycle Time Function
A fixed (minimum) cycle time can be set to minimize variations in I/O response
times.
I/O Refreshing Methods
I/O refreshing can be performed cyclically and immediately by programming
the immediate-refreshing variation of the instruction.
PLC Setup Functions
PLC operation can be customized with PLC Setup settings, such as the maxi-
mum cycle time setting (watch cycle time) and the instruction error operation
setting, which determines whether instruction processing errors and access
errors are treated as non-fatal or fatal errors.
Binary Refreshing of Timer/Counter Instruction PVs
Present values of timer/counter instructions can now be refreshed in binary, in
addition to the existing BCD capability. (Binary refreshing, however, can be
specified with only CX-Programmer Ver. 3.0 and higher.) This allows the timer/
counter setting time to be expanded to a range of 0 to 65535 (from the exist-
ing 0 to 9,999). Also, results calculated by other instructions can be used as is
for timer/counter set values.
Windows-based Support Software
The single-port multiple-access (SPMA) function can be used to program and
monitor other CPU Bus Units on the same bus (CPU Rack or Expansion
Specified address
in I/O memory
Trace memory
The PLC’s initial settings can be
customized with the PLC Setup.
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