Diagnostics and troubleshooting, Reading status data from the module, Required hardware – ProSoft Technology MVI71-MNET User Manual
Page 43: 4 diagnostics and troubleshooting
Diagnostics and Troubleshooting
MVI71-MNET ♦ PLC Platform
User Manual
Modbus TCP/IP Interface Module
ProSoft Technology, Inc.
Page 43 of 109
June 23, 2009
4 Diagnostics
and
Troubleshooting
In This Chapter
Reading Status Data from the Module .................................................. 43
LED Status Indicators............................................................................53
The module provides information on diagnostics and troubleshooting in the
following forms:
Status data values are transferred from the module to the processor
Data contained in the module can be viewed through the
Configuration/Debug port attached to a terminal emulator
LED status indicators on the front of the module provide information on the
module’s status
4.1
Reading Status Data from the Module
The MVI71-MNET module returns a 47-word Status Data block that can be used
to determine the module’s operating status. This data is located in the module’s
database at a user set location. This data is transferred to the PLC processor
continuously when the side-connect interface is utilized. For a complete listing of
the status data object, refer to the Reference chapter. The Configuration/Debug
port provides the following functionality:
Full view of the module’s configuration data
View of the module’s status data
Complete display of the module’s internal database (registers 0 to 3999)
Version
Information
Control over the module (warm boot, cold boot, transfer configuration)
Facility to upload and download the module’s configuration file
4.1.1 Required
Hardware
You can connect directly from your computer’s serial port to the serial port on the
module to view configuration information, perform maintenance, and send
(upload) or receive (download) configuration files.
ProSoft Technology recommends the following minimum hardware to connect
your computer to the module:
80486 based processor (Pentium preferred)
1 megabyte of memory
At least one UART hardware-based serial communications port available.
USB-based virtual UART systems (USB to serial port adapters) often do not
function reliably, especially during binary file transfers, such as when
uploading/downloading configuration files or module firmware upgrades.
A null modem serial cable.