Table of Contents
Advertisement
Appendix A: Panel & PLC Error Code Tables
Allen-Bradley Error Code P499 Explanation
A A
A
The P499 error code is used to show any errors that are generated by the connected PLC. The
P499 error message includes a four digit hexadecimal value displayed at the end of the message.
This value can be looked up in the specific PLC's error tables to determine the cause of the error.
The possible PLC generated error codes for the Allen-Bradley DF1 and DH485
communication protocol is represented by a hexadecimal value as shown in the following
diagram. Please note that the error code is broken down into three sections. It is possible for
more than one type of PLC error to be displayed in this value.
AB DF1 Protocol Error Code P499 Breakdown
16-bit
1
Word
15
P499 Error Code Message
Displayed Hexadecimal Value
A–6
Remote
Local
EXT STS
4-7 bits
0-3 bits
byte
1
1
1
0
0
0
0
0
0
0
1
14
13
12
11
10
9
8
7
6
5
4
F
0
1
7
hex
Allen-Bradley PLC Error Code Displayed Example
Error Recieved = P499: Recv. Err Code 3200
Remote = 0x3000 = Remote node host is missing,
disconnected or shut down.
Local - 0x0200 = Cannot Guarantee Delivery; Link
Layer. The remote node specified does not
ACK Command
EXT STS = 0000 = None
P499: Recv. Err Code F017
®
EA1-MG6-USER-M Hardware User Manual, 1st Ed. Rev C, 09/10
Remote
4-7 bits
0
1
1
1
Local
0-3 bits
3
2
1
0
EXT STS
Example of an EXT STS error
Error P499
for a "Type mismatch."
Value Displayed
Remote
4-7 bits
Local
0-3 bits
EXT STS
byte
Error P499
Value
Displayed
Stop
Start
AB DF1 Protocol – Multiple Error Code Examples
Example 1
Example 2
F
x
x
x
1
x
x
+
+
x
0
x
x
x
1
x
+
+
x
x
0
9
x
x
0
byte
=
=
F
0
0
9
1
1
0
3
x
x
x
+
x
2
x
x
+
+
x
x
0
0
=
3
2
0
0
Example 3
x
F
x
x
x
+
x
x
1
x
x
+
0
x
x
0
9
=
0
F
1
0
9
Hide quick links:
Advertisement
Table of Contents
