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Cycle Time/High-speed Processing Section 6-1
6-1-2 Maximum Cycle Time (Watch Cycle Time)
If the cycle time (see note) exceeds the maximum cycle time setting, the
Cycle Time Too Long Flag (A40108) will be turned ON and PLC operation will
be stopped.
Note Here, the cycle time would be the program execution time when us-
ing a Parallel Processing Mode for CS1-H, CJ1-H, or CJ1M CPU
Units.
PLC Setup
Auxiliary Area Flags and Words
Note If the peripheral servicing cycle exceeds 2.0 s for CS1-H, CJ1-H, or CJ1M
CPU Units in parallel processing mode, a peripheral servicing cycle time
exceeded error will occur and the CPU Unit will stop operation. If this hap-
pens, A40515 (Peripheral Servicing Cycle Time Over Flag) will turn ON.
6-1-3 Cycle Time Monitoring
The maximum cycle time and present cycle time are stored in the Auxiliary
Area every cycle. For CS1-H, CJ1-H, or CJ1M CPU Units in parallel process-
ing mode, the program execution times will be stored.
Auxiliary Area Flags and Words
A Programming Device (CX-Programmer or Programming Console) can be
used to read the average of the cycle times in the last 8 cycles.
Address Name Setting Default
209
Bit: 15
Enable Watch Cycle
Time Setting
0: Default (1s)
1: Bits 0 to 14
0001 (1 s)
209
Bits: 0 to 14
Watch Cycle Time
Setting
(Enabled when bit 15
is set to 1.)
001 to FA0: 10 to 40,000 ms
(10-ms units)
Name Address Description
Cycle Time Too Long
Flag
A40108 A40108 will be turned ON and the CPU Unit
will stop operation if the cycle time exceeds
the watch cycle time setting. The “cycle time”
would be the program execution time when
using a Parallel Processing Mode for CS1-H,
CJ1-H, or CJ1M CPU Units.
Name Address Description
Maximum Cycle Time
(program execution
time for CS1-H, CJ1-H,
or CJ1M CPU Units in
parallel processing
mode)
A262 and
A263
Stored every cycle in 32-bit binary in the follow-
ing range:
0 to 429,496,729.5 ms in 0.1 ms units
(0 to FFFF FFFF)
Present Cycle Time
(program execution
time for CS1-H, CJ1-H,
or CJ1M CPU Units in
parallel processing
mode)
A264 and
A265
Stored every cycle in 32-bit binary in the follow-
ing range:
0 to 429,496,729.5 ms in 0.1 ms units
(0 to FFFF FFFF)
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