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Cycle Time Settings Section 5-6
Note When the constant cycle time function is enabled for the Motion Control Mod-
ule in ASync Mode, the Motion Control Module's cycle time will be constant.
5-6-2 Watch Cycle Time Function
If the real cycle time is longer than the set watch cycle time, operation will stop
for all Modules and the Cycle Time Too Long Flag (A401.08) in the Auxiliary
Area will turn ON.
System Setup
!Caution If the Cycle Time Too Long Flag turns ON for one Module in Sync Mode, the
Cycle Time Too Long Flag will turn ON for all Modules.
Note The settings are made using CX-Programmer Ver. 5.0@ menus.
Cycle Time Too Long Flag
5-6-3 Cycle Time Monitoring Function
Every cycle, the maximum cycle time is stored in A206 and A207 and the PV
is stored in A208 and A209 in the Auxiliary Area.
Auxiliary Area Words
The average cycle time for the last 8 scans can also be read from the CX-Pro-
grammer.
Note The FQM1 can skip program areas that do not need to be executed by using
the JMP-JME instructions to shorten cycle times.
Coordinator
Module
Motion
Control
Module
Constant cycle time Constant cycle time
Waiting for I/O refresh
to become constant
Waiting for I/O refresh
to become constant
Processing Processing
I/O refresh I/O refresh
Waiting to
synchronize
Waiting to
synchronize
Constant I/O
refresh timing
Constant I/O
refresh timing
Tab page Name Details Default
Timer/Peripheral Servic-
ing or Cycle Time
Cycle Time 0.1 to 100.0 ms
(unit: 0.1 ms)
Variable
Watch Cycle Time 1 to 100 ms
(unit: 1 ms)
50 ms
Name Address Details
Cycle Time Too Long
Flag
A401.08 Turns ON if the cycle time PV exceeds the
Watch Cycle Time in the System Setup.
Name Addresses Meaning
Maximum Cycle
Time
A206 to A207 The maximum cycle time value is stored in
binary each cycle. The time is measured in
0.01-ms units.
Cycle Time PV A208 to A209 The cycle time PV is stored in binary each
cycle. The time is measured in 0.01-ms
units.