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8
DEVICE MONITORING UTILITY
8.8
Tuning On and Off Bit Device
The specified bit device can be turned on and off.
WARNING
(1) Precaution for turning on and off the bit device
8
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8.8 Tuning On and Off Bit Device
Configure safety circuits external to the C Controller module to
ensure that the entire system operates safely even when a fault
occurs in the external power supply or the C Controller module.
For the following controls, configure an interlock circuit in the user
program to ensure that the entire system will always operate safely.
(1) Changing data of the running C Controller module from the
development environment (personal computer) connected
(2) Changing the operating status
(3) Operating from the development environment (personal
computer)
Especially, in the case of a control from an external device to a
remote C Controller module, immediate action cannot be taken for a
problem on the C Controller module due to a communication failure.
To prevent this, configure an interlock circuit in the user program,
and determine corrective actions to be taken between the external
device and C Controller module in case of a communication failure.
(a) When a utility communication error has occurred
When a utility communication error has occurred during connection, set the
connection target again in the Connection settings so that the communication can
be restarted.
(b) CC-Link module monitoring
When devices have been written to a CC-Link module (specified as own station)
where the block data assurance per station is enabled, cyclic data will be
automatically refreshed.
However, data are automatically refreshed only when device writing has been
performed within the range set in "Station information settings" for the master
station.
The range set in "Station information settings" can be confirmed by "Slave station
offset, size information" (buffer memory address: 3E0
module.
For details of the block data assurance per station, refer to the C Controller
Module User's Manual (Hardware Design, Function Explanation).
Note also that the read (receive) area of the link refresh devices (the buffer
memory) will not be refreshed when devices have been written.
Q12DCCPU-V
Q06CCPU-V
to 5DF
) of the CC-Link
H
H
Q06CCPU-V-B
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