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Inverter SIO Driver
GP-Pro EX Device/PLC Connection Manual
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Error Messages
Error messages are displayed on the Display screen as follows: "No.: Device Name: Error Message (Error
Occurrence Area)". Each description is shown below.
Examples of Error Messages
"RHAA035: PLC1: Error has been responded for device write command (Error Code: 1 [01H])"
Error Codes Unique to External Device
Item
Description
No.
Error number
Device Name
Name of the External Device where an error has occurred. Device/PLC name is the title of
the External Device set with GP-Pro EX. (Initial value [PLC1])
Error Message
Displays messages related to an error that has occurred.
Error Occurrence Area
Displays the IP address or device address of the External Device where an error has
occurred, or error codes received from the External Device.
• Received error codes are displayed as "Decimal [Hex]".
• Device address is displayed as "Address: Device address".
• IP addresses are displayed as "IP address (Decimal): MAC address (Hex)".
• Refer to your External Device manual for details on received error codes.
• Refer to "When an error is displayed (Error Code List)" in "Maintenance/Troubleshooting
Manual" for details on the error messages common to the driver.
Error Code
Description
02H
Invalid register number error
21H
Data setting error
22H
Write mode error
23H
Writing during main circuit undervoltage (UV) error
24H
Writing error during constants processing