5.4.3Powering OFF the GOT, reapplying the power (OFF to ON)

(1)Precautions for reapplying the power to the GOT (OFF to ON)

Do not power-cycle the GOT (OFF to ON) while the PLC is ON.

Before doing so, be sure to turn off the PLC first.

HINT

Operations causing automatic reboot of the GOT1000 Series

Since the GOT1000 Series is automatically rebooted in the following cases, the power does not need to be reapplied to the GOT (OFF to ON).

•When an OS is written from GT Designer3 or a CF card

•When utility settings have been changed

(2)When turning OFF the GOT before display of the user creation screen

When the GOT is turned OFF before the user creation screen is displayed on the GOT, subsequent communications may be no longer possible.

In such a case, reapply the power to the PLC CPU and GOT.

(3)Precautions for connection of 3 GOTs or more (when connecting QCPU (Q mode))

5.4.10 (1)Restrictions in overall cable length to No. of GOTs

5.4.4Reset switch on GOT

When bus connection is used, the reset switch on the GOT does not function.

5.4.5Powering OFF or resetting thePLC

(1)When turning OFF or resetting the PLC during monitoring

When turning OFF or resetting the PLC during monitoring, the system alarm (No.402: timeout error) is generated.

When the PLC CPU is restored, the GOT automatically resumes monitoring.

Use System Information to reset the alarm.

For the System Information, refer to the following manual:

GT Designer3 Version Screen Design

Manual

(2)When turning OFF or resetting the PLC CPU before display of the user creation screen

When the PLC CPU is turned OFF or reset before the user creation screen is displayed on the GOT, subsequent communications may be no longer possible.

In such a case, reapply the power to the PLC CPU and GOT.

(3)Precautions for connection of 3 GOTs or more (when connecting QCPU (Q mode))

5.4.10 (1)Restrictions in overall cable length to No. of GOTs

5.4.6Position of the GOT

Always connect the GOT to the last base unit. Connecting a GOT between base units is not allowed.

5.4.7When the GOT is bus- connected to a PLC CPU without the communication driver written

When the GOT is bus-connected to a PLC CPU without the standard monitor OS and the communication driver for the bus connection being written onto the GOT, the PLC CPU is reset. (GX Developer cannot communicate with the PLC CPU)

In this case, disconnecting the bus connection cable from the GOT will cancel the reset status of the PLC CPU.

1

PREPARATORYFORPROCEDURESMONITORING 2

RANGESETBE

DEVICE CANTHAT 3

RANGEACCESS MONITORINGFOR 4

MONITORTOREDUNTANTSYSTEM HOW 5

CONNECTIONBUS 6

DIRECTTOCONNECTIONCPU 7

LINKCOMPUTER CONNECTION 8

ETHERNETCONNECTION

5. BUS CONNECTION

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5.4 Precautions