Installation Data
Communication Interface Module
Cat. No. 1784-KT2/B
24
The Card Diagnostics test runs according to the number of times specified
in step two. Your screen shows you when the tests are complete (Status
column), how many errors were discovered (Failures column), and final
test results (Results column).
3.
When you are finished, press any key to return to the main menu.
The Off-Line Communications Diagnostics Test
The Off-Line Communications option allows you to test the
communication capabilities of the 1784-KT2. The Off-Line
Communications test performs two loopback tests. These tests are
performed across:
the auxiliary (PLC-2 or PLC-3) port. This loopback test checks the pins
used to directly connect the 1784-KT2 to either a PLC-2 or PLC-3. You
specify which PLC function you want to test and attach the
corresponding loopback connector to the 1784-KT2.
the main (Data Highway Plus) port. This loopback test checks the pins
used to connect the 1784-KT2 to the Data Highway Plus network. This
port accepts either loopback connector (you must choose one).
For more information on loopback tests, refer to the section entitled
“Building Loopback Connectors.”
To perform an Off-Line Communications test, follow the steps below:
1.
Depending on which set of auxiliary port pins you want to test, install
either the PLC-2 or PLC-3 loopback connector.
2.
Place your cursor on the Off-Line Communications option and press
[F4].
3.
You are asked to select a direct connect function of the auxiliary port.
Press [F2].
4.
The PLC-2 and PLC-3 direct connect functions are displayed. If you
want to test the pins used to connect the 1784-KT2 to a PLC-2, place
your cursor on the PLC-2 function and press [ENTER]. If you want
to test the pins used to connect the 1784-KT2 to a PLC-3, place your
cursor on the PLC-3 function and press [ENTER].
5.
Press [ESC] to return to the main menu. You can press [F4] to select a
new direct connect function whenever [F4] appears on your screen.
6.
Press [ENTER]. You are asked if you want to run a single test
(Single Pass) or a specified number of tests (Repeat). Place your
cursor on Single Pass or on Repeat and press [ENTER].
