ProSoft Technology MVI71-MCM - Manual (Page 41)

Diagnostics and Troubleshooting MVI71-MCM ♦ PLC Platform
Modbus Communication Module
ProSoft Technology, Inc. Page 41 of 111
December 28, 2007
Exiting the Program
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 failures. Only use these commands if you are specifically directed to do so by
ProSoft Technology Technical Support staff. Some of these command keys are not
listed on the menu, but are active nevertheless. Please be careful when pressing keys
so that you do not accidentally execute an unwanted command.
Press [Esc] to restart the module and force all drivers to be loaded. The module
will use the configuration stored in the module's Flash ROM to configure the
module.
4.1.6 Data Analyzer
The data analyzer mode allows you to view all bytes of data transferred on each
port. Both the transmitted and received data bytes are displayed. Use of this
feature is limited without a thorough understanding of the protocol.
Note: The Port selection commands on the Data Analyzer menu differs very slightly in
different modules, but the functionality is basically the same. Use the illustration above
as a general guide only. Refer to the actual data analyzer menu on your module for the
specific port commands to use.
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.
Analyzing Data for the first application port
Press [1] to display I/O data for the first application port in the Data Analyzer.
The following illustration shows an example of the Data Analyzer output.
Analyzing Data for the second application port
Press [2] to display I/O data for the second application port in the Data Analyzer.