ProSoft inRax MVI94-GSC-E, Руководство пользователя

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Diagnostics & Troubleshooting MVI94-GSC-E ♦ FLEX Platform
User Manual Generic ASCII Comunication Module
ProSoft Technology, Inc.
Page 23 of 60
July 6, 2009
3 Diagnostics & Troubleshooting
In This Chapter
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Reading Status Data from the Module .................................................. 23
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LED Status Indicators............................................................................ 23
The module provides diagnostic information in the following forms.
ƒ
Status Data values are transferred from the module to the Flex processor.
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All data contained in the module can be viewed through the
configuration/debug port on an attached terminal emulator.
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LED status indicators on the front of the module yield information on the
modules status.
The following topics explain how to obtain the Status Data from the module and
the meaning of the individual LEDs on the module.
3.1 Reading Status Data from the Module
The MVI94-GSC-E module returns two separate status data areas to the Flex
processor when no receive data is available to transfer. For a complete listing of
the status data objects, refer to the Backplane Data Transfer section of this
document.
3.2 LED Status Indicators
This section defines the indications provided on the MVI94-MCM module through
LEDs. A description of each LED is provided in the following topics.
3.2.1 PRT1
This LED indicates data transmit and receive activity on the configuration port.
When the TXD or RXD pin is active on the port, the LED will illuminate green.
When the port is not active, the LED remains in the off state.
3.2.2 U1
This LED indicates backplane data transfer operation. When the module is
successfully writing data to the FLEX I/O backplane, the LED will be in the off
state. When the module is reading a new block of data from the FLEX I/O
backplane, the LED will be in the on state (amber). During normal operation of
the module, this LED should turn on and off at a vary rapid rate. If the LED never
turns on, check your ladder logic to verify that the data transfer is set up
correctly.