ProSoft Technology MVI46-MCM - Manual (Page 35)

MVI46-MCM ♦ SLC Platform Diagnostics and Troubleshooting
Modbus Communication Module User Manual
ProSoft Technology, Inc. Page 35 of 108
March 29, 2011
During module configuration, the OK LED is red and the APP and BP ACT LEDs
will be on. If the LEDs are latched in this mode 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.
M0 Offset Description Length
0 9000 1
1 Spare 1
2 Port 1 Configuration Errors 1
3 Port 2 Configuration Errors 1
The port configuration error words have the following definitions:
Bit Description Value
0 Type code is not valid. Enter a value from 0 (master)to 1 (slave). 0x0001
1 Protocol parameter is not valid. 0x0002
2 Termination type parameter is not valid. 0x0004
3 Baud rate parameter is not valid. 0x0008
4 Parity parameter is not valid. 0x0010
5 Data bits parameter is not valid. 0x0020
6 Stop bits parameter is not valid. 0x0040
7 Command count parameter is not valid. 0x0080
8 Retry count parameter is not valid. 0x0100
9 Spare 0x0200
10 Spare 0x0400
11 Spare 0x0800
12 Spare 0x1000
13 Spare 0x2000
14 Spare 0x4000
15 Spare 0x8000
Correct any invalid data in the configuration for proper module operation. When
the configuration contains a valid parameter set, all the bits in the configuration
words will be clear. This does not indicate that the configuration is valid for the
user application. Make sure each parameter is set correctly for the specific
application.
If the APP, BP ACT and OK LEDs blink at a rate of every one-second, this
indicates a serious problem with the module. Call ProSoft Technology support to
arrange for repairs.