Turning The Got On - Mitsubishi Electric GOT2000 Series Connection Manual

8.4.2

Turning the GOT ON

■1. System configuration
The PLC CPU remains in the reset status until the GOT is started.
Therefore, no sequence program will run until then.
The system configuration, in which the GOT is turned on from a sequence program, is not available.
■2. Time taken until the PLC runs after power-on of the GOT
The following time is taken from when the GOT is powered on until when the PLC runs.
• QCPU (Q mode), motion controller CPU
(Q series): 10 seconds or more
• MELDAS C70: 18 seconds or more
When the GOT starts before the PLC runs, a system alarm occurs.Adjust the opening screen time in the GOT setup so
that no system alarm occurs.
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■3. Power-up sequence for connection of 3 GOTs or more (when connecting QCPU (Q mode))
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■4. Power-up sequence for connection of the Q4ARCPU redundant system
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■5. Power-up sequence for cases other than ■3. and ■4.
The GOT and PLC can both be started up whichever of these devices is turned ON first. (There is no specific sequence
in which they are powered ON)
Note, however, that operation is as follows when the GOT is turned ON followed by the PLC:
When the PLC power is OFF with the GOT turned ON, the system alarm (No.402: timeout error) is generated.
Upon power-on of the PLC CPU, the GOT automatically starts monitoring.
Use System Information to reset the alarm.
For the System Information, refer to the following manual:
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8.4.3 Powering 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.
■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))
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8.4.4 Reset switch on GOT
When bus connection is used, the reset switch on the GOT does not function.
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8.4 Precautions
GT Designer3 (GOT2000) Screen Design Manual
8.4.10 ■1. Restrictions in overall cable length to No. of GOTs
8.4.14 ■2. Power-On sequence for GOT and Q4ARCPU redundant system
GT Designer3 (GOT2000) Screen Design Manual
POINT POINT POINT
Operations causing automatic reboot of the GOT2000 Series
Since the GOT2000 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 SD card
• When utility settings have been changed
8.4.10 ■1. Restrictions in overall cable length to No. of GOTs