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Chapter 3 Operation
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3.3 Starting the Controller
3.3.1 Turning on the Power and Cutoff
(1) Power on Procedure
The following procedure is applied for cases where the parameters are the same as those at
delivery, and the unit is not in the error occurrence mode or emergency stop mode.
Also, the number allocation for the I/O ports is shown as the same as the delivery in this
description.
1) After confirming that the wirings are performed properly, supply power to the peripheral
devices. If PIO is in use, supply 24V DC for PIO. In the case that it is not used, the power
supply is not required, but, set I/O Parameter No. 10 and No. 18 to “0: Unmonitored”.
2) Supply the main power.
3) Once the startup of the controller (CPU startup) is held in normal condition, I/O Port No.
317 turns ON.
A timing chart of the above operation is shown below.
Main power
Controller state
Peripheral device
Initialized/Self checking Normal operation state
Prior supply
Status of power supply and
connection diagnosed at initializing
(DIO power supply and fieldbus:
setting at delivery)
(2) Power Cutoff on Procedure
Shut the power on the peripheral devices at the same time as or after the shutoff of the main
power.
Shut the power on the peripheral devices
at the same time as or after the shutoff of
the main power
Main power
Peripheral device
Caution: Leave it for 5 seconds or more after shutting the power off when you turn it back
on.