C-more Panel Communication Error Codes

Topic: CM064

To simplify the error identification process, C-more Panels automatically display an Error Code.

Below are a list of C-more Panel Error Codes that C-More panels may display. If a C-more communications error occurs, the error Message displays at the top of the screen.

C-more Panel Error Codes
Error Code Error Message Error Code stored in SYS_ERR Description
PLC-001 PLC Communication Timeout%Device% PLC Communication Timeout 1001 When multi-connection such as RS-422, 485. Add to %Device% Timeout occurred after sending request to PLC. A timeout error occurred after sending the request to a PLC. When multi-connecting, such as with RS-422, 485. Add to %Device%, is Device registered by Panel Manager.
PLC-002 NAK received from PLC 1002 A Negative Acknowledgment (NAK) control code generated during a read/write request from the PLC.
PLC-003 EOT received from PLC 1003 An End of Transmission (EOT) control code sent by the PLC in response to a Read/Write/SetBit request.
PLC-004 STX is not found 1004 A Start of Text (STX) control code is not found in the Data packet from the PLC.
PLC-005 ETX or ETB is not found 1005 Neither an End of Text (ETX) or an End of Transmission Block (ETB) control code is found in the Data packet from the PLC.
PLC-006 LRC does not match 1006 There is an incorrect Longitudinal Redundancy Check (LRC) control code in the communications packet from the PLC. The Data in the packet is corrupted.
PLC-007 CRC does not match 1007 There is an incorrect Cyclic Redundancy Check (CRC) control code in the communications packet from the PLC. The Data in the packet is corrupted.
PLC-008 Address Does Not Match 1008 The Address value returned in the Data packet from the PLC is incorrect.
PLC-009 Different function code received from PLC 1009 The Function Coder returned in the Data packet from the PLC is incorrect.
PLC-010 Data size does not match 1010 There is an incorrect number of bytes found in the Data returned from the PLC.
PLC-011 Invalid value in function code 1011 There is an invalid value in the Function Code.
PLC-012 Invalid Command sent to PLC 1012 There was an invalid command sent to the PLC that is not recognized by the PLC.
PLC-013 ENQ received from PLC 1013 If the packet does not include a Negative Acknowledgment (NAK - 0x15 value) in the defined packet field, then an Enquiry (ENQ) control code error displays.
PLC-014 Transaction ID Does Not Match 1014 This error displays if after checking the Transaction ID Bytes in the packet, there is no match to the request.
PLC-015 %Device% No device found 1015 A PLC device designated as %Device% is not found.
PLC-016 Data byte communication Error 1016 0 byte of Data is received in Data part.
PLC-017 Out of address range 1017 This an AB protocol error. The Panel requested a file number more than 255 to PLC (except PLC5). C-more support for file numbers more than 255 is only for PLC5. Other PLC support up to 255.
PLC-018 Panel Communication Timeout 1018 The server panel did not respond when using the Panel Pass Through.
PLC-019 Found in Parity Error by Hardware 1019 An error detected in the PLC memory.
PLC-020 Can't Open Serial Port0 1020 Cannot Open the Serial Port. If this error shows on the panel, there is a hardware problem.
PLC-021 PLC Number does not Match 1021 The PLC  Number does not match the PLC number Configured.
PLC-022 Can't Reset DCB 1022 Unable to reset the Data Communication Bit.
PLC-023 Cable not connected properly 1023
PLC-024 Cannot detect other devices on Network 1024
PLC-025 Panel not in polling list 1025
PLC-026 PLC Connection Timeout 1026 A timeout error after sending the request to a PLC.
PLC-027 Memory Type Incorrect 1027
PLC-028 PLC Failed to Respond 1028 If the PLC Protocol in Panel Manager is AutomationDirect K-sequence, AutomationDirect DirectNet, or AutomationDirect Modbus and the PLC Secondary Comm Port configuration has all three protocols enabled (as is the default setting for that port), DISABLE (in DirectSoft) the protocols that are not in use.
Sometimes occurs because C-more Panel Manager "CPU Slot" is a slot containing a 1756-DHRIO "DH+/RIO Module.
Sometimes occurs because C-more Panel Manager "CPU Slot" is a slot containing a 1756-ENBT.
PLC-029 PLC Memory Version Error 1029
PLC-495 Error code %hhhh% (%0xhhhh%) returned from PLC 1495 Indicates an error Message received from the PLC. Look in the error code topic for the PLC manufacturer, listed in Related Topicsbelow.
PLC-496 Error code %0xhhhhhhhh% returned from PLC on EIP 1496 Indicates an error Message received from the PLC. Look in the error code topic for the PLC manufacturer, listed in Related Topics below.
PLC-497 Error code %0xhhhhhh% returned from PLC on CIP 1497 Indicates an error Message received from the PLC. Look in the error code topic for the PLC manufacturer, listed in Related Topics below.
PLC-498 Error code %0xhhhhhh% returned from PLC on Service 1498 Indicates an error Message received from the PLC. Look in the error code topic for the PLC manufacturer,listed in Related Topics below.
PLC-499 Error code %0xhhhh% returned from PLC 1499 Indicates an error Message received from the PLC. Look in the error code topic for the PLC manufacturer, listed in Related Topics below.
PLC-500 Cannot write to Serial Port 1500 Data sent to the PLC via the serial port. This is a hardware problem.
PLC-700 Not enough buffer memory 1700 Aan error while allocating memory for the read buffer. This error indicates a possible memory leak.
PLC-701 Access to inaccessible PLC memory 1701 The HMI layer cannot access memory in PLC protocol layer. There is a problem in the HMI layer.
PLC-702 Cannot access by different function code 1702 An invalid memory request sent to the Read/Write/SetBit area. There is a problem in the HMI layer.
PLC-703 Write request to PLC read only memory 1703 A PLC write request made to the PLC read only memory area. There is a problem in the HMI layer or the PLC protocol layer.
PLC-704 Bad device-access 1704 No device (PLC) exists in the server panel or the server/client device name does not match using Panel Pass Through.
PLC-705 Protocol does not match 1705 The server/client protocol for the device does not match between the server and client using Panel Pass Through.

The PLC-499 Error Code is used to show any errors generated by the connected PLC. The PLC-499 Error Message includes a four digit hexadecimal value. Look up this value in the specific PLC error tables.

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