T.4.1
Communication fails on all screens
Is an error code displayed on the GP?
If communication fails on all screens, first check the error
code displayed on the screen.
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Typical error No.
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Main cause
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RHAA006 to RHAA007
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Check if any
noise is generated. Check the cable and connectors.
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RHAA010 to RHAA012
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This error is displayed during Ethernet
communication. Check the port number and network environment.
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RHAA033 to RHAA035
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This error is caused by the connected
device.
For details, see the GP-Pro EX Device/PLC
Connection Manual.
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RHAA036 to RHAA037*1
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Address outside of the device range is
used.
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RHAA038*1
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An attempt was made to read data which is
write-only.
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RHAA039*1
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An attempt was made to write to data which is
read-only.
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RHAA040 to RHAA045
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This error is caused by the connected device.
For details, see the GP-Pro EX Device/PLC Connection Manual.
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RHAA065 to RHAA066*1
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This is a typical error displayed when Ethernet
communication fails. Check the communication settings and IP
address.
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RHAA067 to RHAA070*1
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This is a typical error displayed when
RS-232C/422/485 communication fails. Check the communication
settings and cable connection.
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Is an error starting with RHAA067 to RHAA070
displayed?
Cause
Errors starting with RHAA067 to RHAA070 are
displayed when there is a problem with the RS-232C/422/485
communication.
Solution
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From the GP-Pro EX [System Settings] window, in the
[Peripheral Settings] area select [Device/PLC].. When a screen
similar to the following is displayed, check that the communication
settings are properly specified by referring to the GP-Pro EX Device/PLC Connection
Manual.
Example, when Q/QnA Serial communication series manufactured by
Mitsubishi Electric Corporation is used.
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Also check the communication settings in offline
mode. In the display unit's offline menu, from [Peripheral
Settings] select [Device/PLC Settings]. Check if the communication
settings are valid by referring to the "GP-Pro EX Device/PLC Connection
Manual".
Example, when Q/QnA Serial communication series manufactured by
Mitsubishi Electric Corporation is used.
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Check the communication settings of the connected
device by referring to the "GP-Pro EX Device/PLC Connection Manual"
or the Device/PLC Connection Manual.
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Check that the cable model and wiring are
appropriate referring to the "GP-Pro EX Device/PLC Connection
Manual".
Is an error starting with RHAA065 and RHAA066
displayed?
Cause
Errors starting with RHAA065
and RHAA066 are displayed when there is a problem with the Ethernet
communication.
Solution
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If the PC is located in a network, send the PING
command to the GP and connected device and check whether they
reply. Click the Start button, select [Programs], [Accessories],
and [Command Prompt]. When the following screen is displayed, type
"ping" followed by a space and the IP address after "C:\Documents
and Settings\(Your computer name)". (Example: ping 192.168.0.2)
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From the GP-Pro EX [System Settings] window, in the
[Peripheral Settings] area select [Device/PLC].. When a screen
similar to the following is displayed, check that the communication
settings are properly specified by referring to the GP-Pro EX Device/PLC Connection
Manual.
Click  on the screen above to
display the following dialog box. Check if the IP address of the
connected device is set properly.
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Set the display unit to offline mode, select
[Device/PLC Settings]
of [Peripheral
Settings], and also check that the communication settings
are set properly by referring to the "GP-Pro EX Device/PLC
Connection Manual" again.
Example, when using Mitsubishi Melsec-A Series Ethernet
Also, check the IP addresses specified for the connected device and
display unit by referring to the following.
-
-
Check the communication settings and IP address of
the connected device by referring to the "GP-Pro EX Device/PLC
Connection Manual" or the Device/PLC Connection Manual.
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Try changing the hub and cable.
Is an error starting with RHAA036 to RHAA039
displayed?
Cause
Errors starting with RHAA036 to RHAA039 are displayed when an
address outside of the specified range is used.
Solution
The addresses of an unsupported
connected device may be used by the parts on the screen or scripts.
These errors may occur
on all screens if unsupported addresses are used by parts or
functions that generate communication on all screens, for
example, system data area, alarm, sampling, global D-script, global
window, logic program.
Follow the procedure below to check if any devices use
unsupported addresses.
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From the GP-Pro EX [Project] menu, expand [Utility]
and select [Cross Reference].
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When the [Cross Reference] dialog box appears,
select [All] from the [Target] drop-down list.
Check if any of the following points are true
for the addresses displayed in blue according to the error
code.
Check if any
addresses outside of the range of the device addresses supported by
GP-Pro EX are used.
Check if the
Data Display or D-script tries to read a write-only device.
Check if a switch or a D-script tries to
write to a read-only device.
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For the range of the device addresses supported
by GP-Pro EX, and write-only or read-only device addresses, see the
"Supported Devices" section in the corresponding GP-Pro EX
Device/PLC Connection Manual.
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