Diagnostics and Troubleshooting MVI56-DH485R
♦
ControlLogix Platform
User Manual
DH485 Interface Module for Remote Chassis
ProSoft Technology, Inc.
Page 41 of 97
August 27, 2009
4 Diagnostics
and
Troubleshooting
In This Chapter
Reading Status Data from the Module .................................................. 41
Configuration/Debug Port ...................................................................... 41
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 MVI56-DH485R module returns status data normal read block (input image)
with identification codes of -1 and 0 that can be used to determine the module’s
operating status. On each cycle of data transfer to the processor, the module will
pass blocks 0 and -1. These blocks contain the status data for each port and the
general module status data. For a complete listing of the status data object, refer
to the Reference chapter.
4.2 Configuration/Debug
Port
The module contains a configuration/debug port that transfers the configuration
between the module and a remote PC and to view all the configuration and
status data of the module. The sections below discuss the facilities offered on
this interface.
4.2.1 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