ProSoft Technology MVI94-MCM-MHI User Manual
Page 48
Diagnostics and Troubleshooting
MVI94-MCM ♦ Flex I/O Platform
User Manual
Serial Communications Modbus Communication Module
Page 48 of 109
ProSoft Technology, Inc.
March 29, 2011
4.3
Module Configuration
4.3.1 Main Menu
When you first connect to the module from your computer, your terminal screen
will be blank. To activate the main menu, press the [?] key on your computer’s
keyboard. If the module is connected properly, the following menu will appear.
Caution: Some of the commands available to you from this menu are designed for advanced
debugging and system testing only, and can cause the module to stop communicating with the
processor or with other devices, resulting in potential data loss or other communication failures.
Use these commands only if you fully understand their potential effects, or if you are specifically
directed to do so by ProSoft Technology Technical Support Engineers.
There may be some special command keys that are not listed on the menu but that may activate
additional diagnostic or debugging features. If you need these functions, you will be advised how to
use them by Technical Support. Please be careful when pressing keys so that you do not
accidentally execute an unwanted command.
Redisplaying the Menu
Press [?]
to display the current menu. Use this command when you are looking
at a screen of data, and want to view the menu choices available to you.
Opening the Data Analyzer Menu
Press [A]
to open the Data Analyzer Menu. Use this command to view all bytes
of data transferred on each port. Both the transmitted and received data bytes
are displayed. Refer to Data Analyzer (page 53) for more information about this
menu.
Important: When in analyzer mode, program execution will slow down. Only use this tool during a
troubleshooting session. Before disconnecting from the Config/Debug port, please press [S]
to stop
the data analyzer, and then press [M]
to return to the main menu. This action will allow the module
to resume its normal high speed operating mode.