ProSoft Technology MVI71-MCM - Manual (Page 50)

MVI71-MCM ♦ PLC Platform Diagnostics and Troubleshooting
Modbus Communication Module
Page 50 of 111 ProSoft Technology, Inc.
December 28, 2007
4.2 LED Status Indicators
The LEDs indicate the module's operating status as follows:
ProSoft
Module Color Status Indication
On Data is being transferred between the module and a
remote terminal using the Configuration/Debug port. CFG Green
Off No data is being transferred on the Configuration/Debug
port.
On Data is being transferred between the module and the
MODBUS network on Port 1. P1 Green
Off No data is being transferred on the port.
On Data is being transferred between the module and the
MODBUS network on Port 2. P2 Green
Off No data is being transferred on the port.
Off The MVI71-MCM is working normally. APP Amber
On The MVI71-MCM module program has recognized a
communication error on one of its ports.
On The LED is on when the module is performing a write
operation on the backplane. BP ACT Amber
Off The LED is off when the module is performing a read
operation on the backplane. Under normal operation, the
LED should blink rapidly on and off.
Off The card is not receiving any power and is not securely
plugged into the rack.
Green The module is operating normally.
OK Red/
Green
Red The program has detected an error or is being configured.
If the LED remains red for over 10 seconds, the program
has probably halted. Turn off the power to the rack,
remove the card from the rack re-insert the card and then
restore power to restart the module's program.
Off The battery voltage is OK and functioning. BAT Red
On The battery voltage is low or battery is not present. Allow
battery to charge by keeping module plugged into rack for
24 hours. If BAT LED still does not go off, contact ProSoft
Technology, as this is not a user serviceable item.
During module configuration, the OK LED will be 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.
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.