Allen-Bradley Dh485 Protocol - Plc Error Code Tables - Automation Direct C-more EA1-T4CL Hardware User Manual

Appendix A: Panel & PLC Error Code Tables
Allen-Bradley DH485 Protocol – PLC Error Code Tables
A
The following PLC error code tables cover possible errors that are detected by the panel from
Allen-Bradley PLCs using the DH485 protocol. This includes all MicroLogix and SLC500
PLCs, and any communication connection using an Allen-Bradley AIC device using the
DH485 protocol.
Note: The following errors can be generated from the designated PLC, are monitored by the C-more Micro-
Graphic panel, and displayed on the panel's screen as a hexadecimal value in panel error code P499, if active.
Please refer to the PLC users manual for additional information.
PLC Errors for Allen-Bradley DH485 Protocol, Remote STS Errors (4-7 bits)
Panel Error Code
P499 Hex Value
0x0
0x10
0x20
0x30
0x40
0x50
0x60
0x70
0x80
0x90
0xA0
0xB0
0xC0
0xD0
0xE0
0xF0
PLC Errors for Allen-Bradley DH485 Protocol, Local STS Errors (0-3 bits)
Panel Error Code
P499 Hex Value
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
PLC generated error codes for the Allen-Bradley DH485 protocol continue on the next page.
A–10
Success; no error.
Illegal command or format.
Host has a problem and will not communicate.
Remote node host is missing, disconnected, or shut down.
Host could not complete function due to hardware fault.
Addressing problem or memory protect rungs.
Function not allowed due to command protection selection.
Processor is in Program Mode.
Compatibility mode file missing or communication zone problem.
Remote node cannot buffer command.
Wait ACK (1775 KA buffer full).
Remote node problem due to download.
Wait ACK (1775 KA buffer full).
not used
not used
Error code in the EXT STS byte. See the error code table on the next page.
Success; no error.
DST node is out of buffer space.
Cannot guarantee delivery; link layer.
(The remote node specified does not ACK command.)
Duplicate token holder detected.
Local port is disconnected.
Application layer timed out waiting for response.
Duplicate node detected.
Station is offline.
Hardware fault.
® ® EA1-TCL-M Hardware User Manual, 2nd Ed., 10/10
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