User`s manual

67
CHAPTER 2 USING THE PROGRAMMABLE CONTROLLER CPU MONITORING FUNCTION
2
2.4 Precautionary Notes for Using the Programmable Controller CPU Monitoring Function
2.4 Precautionary Notes for Using the Programmable
Controller CPU Monitoring Function
(1) The cycle time will be affected by the following factors.
Keep these in mind when setting the cycle time.
(a) When the programmable controller CPU is accessed by a module other than the Q
series C24.
(b) When a data communication function other than the programmable controller CPU
monitoring function is used.
(c) When transmission stops by DTR/DSR control.
(2) Both the constant cycle transmission and the condition agreement
transmission cannot be designated together for the same interface.
(3) Only the local station's programmable controller CPU can be the target for the
programmable controller CPU monitoring function.
(4) A new programmable controller CPU monitoring registration cannot be
performed while the programmable controller CPU monitoring function is in
operation.
(a) Perform the new programmable controller CPU monitoring registration after
canceling the programmable controller CPU monitoring.
(b) If the new programmable controller CPU monitoring registration is performed
without canceling the programmable controller CPU monitoring, an error will occur.
Also, for programmable controller CPU monitoring registration using GX Configurator-SC, perform the
registration after placing the programmable controller CPU in the STOP status, and then restart QCPU.
(5) While the programmable controller CPU monitoring function is in operation,
even if an error occurs with transmission/notification of the programmable
controller CPU monitoring results or reading of data from the programmable
controller CPU, the programmable controller CPU monitoring function
operation will not stop.
(6) The programmable controller CPU monitoring function can only be used when
the system configuration is 1:1.