154 - Troubleshooting and Technical Support
DeviceMaster Installation and Configuration Guide
: 2000594 Rev. F
Troubleshooting and Technical Support
Reports can be opened, viewed and re-used when needed. To open and view a report:
a.
Select File > Open
or the
Open Existing Session
button. The
Open Session
dialog appears.
b.
Locate the session (table), you want to open and click the
Open
button.
Optionally, if you want to continue monitoring for an existing session, you need to activate the
Polling
Interval
.
•
Select Tools > Settings
to access the PMon2
Settings
dialog
•
Change the
Polling Interval
field to a value other than zero (0)
10. Leave Port Monitor open so that you can review events when using
Test Terminal
to test a port or ports.
Testing Ports Using Test Terminal
You can use the following procedure to test COM ports. If you need to install the DeviceMaster device driver,
locate the
driver and driver installation documentation.
The following procedures require a loopback plug to be placed on the port or ports that you want to test. A
loopback plug was shipped with your product. If you need to build a replacement or additional loopback plugs,
refer to
Overview
Test Terminal (WCom2) allows you to open a port, send characters and commands to the port, and toggle the
control signals. This application can be used to troubleshoot communications on a port-by-port basis.
•
Send and Receive Test Data
: This sends data out the transmit line to the loopback plug, which has the
transmit and receive pins connected thus sending the data back through the Rx line to Test Terminal,
which then displays the received data in the terminal window for that port. This test is only testing the Tx
and Rx signal lines and nothing else. This test works in either RS-232 or RS-422 modes as both modes
have transmit and receive capability. A failure in this test will essentially prevent the port from working
in any manner.
•
Loopback Test:
This tests all of the modem control signals such as RTS, DTR, CTS, DSR, CD, and RI along
with the Tx and Rx signals. When a signal is made HI in one line the corresponding signal line indicates
this. The Loopback Test changes the state of the lines and looks for the corresponding state change. If it
successfully recognizes all of these changes, the port passes.
A failure on this test is not necessarily critical as it will depend on what is connected and how many signal
lines are in use. For example, if you are using RS-232 in 3-wire mode (Transmit, Receive and Ground) a
failure will cause no discernible issue since the other signals are not being used. If the port is configured
for use as either RS-422 or RS-485 this test will fail and is expected to fail since RS-422 and RS-485 do not
have the modem control signals that are present in RS-232 for which this test is designed.
Opening Ports
The following procedure shows how to use
Test Terminal
to send and receive test data to the serial ports. If
necessary, use
on Page 35, which contains Test Terminal.
1.
Stop all applications that may be accessing the ports such as RRAS or any faxing, or production software.
See the appropriate help systems or manuals for instructions on stopping these services or applications.
If another application is controlling the port, then
Test Terminal
will be unable to open the port and an
error message will be shown.
2.
Start Test Terminal (WCom2). If necessary, start PortVision DX from the
Start
menu, select
Comtrol >
PortVision DX
or click the desktop shortcut.
