User`s manual

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MELSEC
7 UTILITY OPERATION
(2) Bit device
The following shows the operation for turning on/off a bit device.
However, this is operable only when the display form is "Portrait."
1. Double-click the number of the bit device to be changed.
2. Select Yes in the dialog box shown below, if the change is acceptable.
Select No
to cancel it.
DANGER
• Configure the interlock circuit over the sequence program so that the entire system
works safely at all times for data change control to the PLC in operation.
Also, decide on corrective actions for an event of data communication error between
the PC and PLC CPU in use.