| Error Code | Error Message | Cause and Troubleshooting | 
|---|---|---|
| 0xC0A10010 REAA016 -1063190512 3231776784 | Could not use the XX port (No: XX). | Could not use the XX port (No: XX). The system port number may have already been used. | 
| 0xC0A10011 REAA017 -1063190511 3231776785 | Attempted to access a write-protected area (XX)  | You cannot write to the write-protected area (LS0000 to LS0019, LS2032 to LS2095, LS9000 to LS9999) using a D-script or across the network. | 
| 0xC0A10012 REAA018 -1063190510 3231776786 | Attempted to access a device outside the address range (XX)  | A device beyond the valid device range was accessed. | 
| 0xC0A10015 REAA021 -1063190507 3231776789 | An invalid ID (Node, Device, Address) has been specified. | An invalid ID was specified. Attempted to access a nonexistent device. | 
| 0xC0A10016 REAA022 -1063190506 3231776790 | An invalid ID (Node, Device, Address) has been specified. | |
| 0xC0A1001A REAA026 -1063190502 3231776794 | Illegal/Undefined Device Address | An invalid device was specified. Attempted to access a nonexistent device. | 
| 0xC0A1001B REAA027 -1063190501 3231776795 | Illegal/Undefined Device Address | |
| 0xC0A1001C REAA028 -1063190500 3231776796 | Illegal/Undefined Device Address | |
| 0xC0A10070 REAA112 -1063190416 3231776880 | Failed to read data. Too many addresses to read from server. Or, too many GP-Viewer EX may be connected. | Either reduce the number of addresses on the device connected to the display unit and transfer again, or reduce the number of GP-Viewer EX connections on one display unit. | 
Line 1: error code
Line 2: Integrated error code
Line 3: Base10 signed error code
Line 4: Base10 unsigned error code