Communication Error Codes - ProSoft MVI56E-MCMR User Manual

Diagnostics and Troubleshooting
User Manual
5.4

Communication Error Codes

During module configuration download, the OK and APP LEDs will cycle through
various states. If the OK LED remains RED and the APP LED remains OFF or
RED for a long period of time, look at the configuration error words in the
configuration request block. The structure of the block is shown in the following
table.
Offset
0
1
2
3
4
5 to 38
39
The bits in each configuration word are shown in the following table. The module
configuration error word has the following definition:
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Page 136 of 223
Description
Reserved
9000
Module Configuration Errors
Port 1 Configuration Errors
Port 2 Configuration Errors
Spare
-2 or -3
Description
Read block start value is greater than the database size.
Read block start value is less than zero.
Read block count value is less than zero.
Read block count + start is greater than the database size.
Write block start value is greater than the database size.
Write block start value is less than zero.
Write block count value is less than zero.
Write block count + start is greater than the database size.
MVI56E-MCMR ♦ ControlLogix Platform
Modbus Communication Module with Reduced Data Block
Length
1
1
1
1
1
34
1
Value
0x0001
0x0002
0x0004
0x0008
0x0010
0x0020
0x0040
0x0080
0x0100
0x0200
0x0400
0x0800
0x1000
0x2000
0x4000
0x8000
ProSoft Technology, Inc.