Mitsubishi Electric GOT2000 Series Connection Manual page 370

■5. Connection to LCPU
LCPU may diagnose (check file system, recovering process, etc.) the SD memory card when turning on the power or
when resetting. Therefore, it takes time until the SD memory card becomes available. When the GOT starts before the
SD card becomes available, a system alarm occurs. Adjust the opening screen time in the GOT setup so that no
system alarm occurs.
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■6. When connecting to multiple GOTs
(1) Setting PLC No.
When connecting two or more GOTs in the Ethernet network, set each [PLC No.] to the GOT.
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(2) Setting IP address
Do not use the IP address "192.168.0.18" when using multiple GOTs with the GOT 1000 series mixed.
A communication error may occur on the GOT with the IP address.
(3) Setting for starting up multiple GOTs simultaneously (When connected to Built-in Ethernet port
CPU)
When connecting multiple GOTs to one Built-in Ethernet port CPU, adjust the timing of GOT communication start.
When the communication concentrates on the PLC, the communication between GOT and PLC becomes difficult,
and the monitoring by GOT may not start. As a method for adjusting the timing, communicating one GOT alone first,
and then communicating the other GOTs is effective.
Set the following items on each GOT.
• [Startup Time] of [Controller Setting], or [Title Display Time] of [GOT Setup].
• [Timeout Time] of [Controller Setting]
The following shows a setting example.
■7. When connecting to the multiple network equipment (including GOT) in a segment
By increasing the network load, the transmission speed between the GOT and PLC may be reduced.
The following actions may improve the communication performance.
• Using a switching hub
• More high speed by 100BASE-TX (100Mbps)
• Reduction of the monitoring points on GOT
■8. When setting IP address
Do not use "0" and "255" at the end of an IP address.
(Numbers of *.*.*.0 and *.*.*.255 are used by the system)
The GOT may not monitor the controller correctly with the above numbers.
Consult with the administrator of the network before setting an IP address to the GOT and controller.
■9. When monitoring to another network No. on the same line
When the network No. of the GOT does not match with that of the PLC on the same Ethernet, the PLC cannot be
monitored. When monitoring, set the same network No. as that of the GOT, or connect a Ethernet module to the PLC
and set the routing setting to monitor as other network.
When the Multi-channel is supported for GT16, set each channel with the networks No. to monitor.
■10. Remote password for QCPU
Do not set a remote password for QCPU.
Monitoring with GOT becomes unavailable.
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5.5 Precautions
GT Designer3 (GOT2000) Screen Design Manual
5.3.1 Setting communication interface (Controller Setting)
QnUDE(H)CPU
Startup Time
HUB
GOT1 GOT2
Item GOT1
3sec (default)
Timeout Time 3sec (default)
GOT10
GOT2
GOT10
4sec 4sec
4sec 4sec