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10.3 Troubleshooting by symptom
10.3.3 When operating the MES interface module
10
TROUBLESHOOTING
(2) Troubleshooting about network connection
(3) Troubleshooting about communication between the MES interface module
and access target CPU
Table 10.19 Troubleshooting about network connection
Symptom Checked item Corrective action
Unable to access the MES interface
module.
Is it in "Online" mode? • Change the mode to "Online".
Is the MES interface module connected to
the network? (X4 = ON)
• Connect the MES interface module to the
network.
Is there any disconnection in the
connection route?
• Connect the cables properly.
Is the IP address duplicated?
• Correct the IP address setting.
Section 7.6.1 Setting items in
Network setting
Is there a firewall and/or a proxy server in
the connection route?
• Ask your network administrator about the
firewall setting.
Section 5.1 Installation
• Ask your network administrator about the
proxy server setting.
Is there any problem on the personal
computer?
• Replace it with another computer.
Table 10.20 Troubleshooting about communication between the MES interface module and access target CPU
Symptom Checked item Corrective action
Unable to access another station via Q
series E71.
Is a remote password set for the GX
Developer communication port (UDP/IP) of
the Q series E71 on the target or relay
station?
• Remove the remote password set for the
GX Developer communication port (UDP/
IP) of the Q series E71 on the target or
relay station.
An error occurs when accessing the
Redundant CPU.
Is MES interface accessing the Redundant
CPU of other station?
• Mount a MES interface module to the
extension base unit of the Redundant
CPU that is access target and access it.
The MES interface cannot access the
Redundant CPU of other station.
Is system switching consecutively
occurring?
• Review the system so that system
switching will not occur consecutively.
When the MES interface module is started
up, 'Errors detected by the access target
CPU' (error code: 4B00h) occurs.
Is the MES interface module accessing
other CPU, or accessing the other station
via a network module controlled by other
CPU, in the multiple CPU module?
• Clear the error in the MES interface
module after starting up the CPU module
in the multiple CPU system.
Section 2.6.2 Precautions for using
multiple CPU system