Siemens SIMATIC TIWAY 1 - Manual (Page 174)

ERROR CODES AND DIAGNOSTICS
UNILINK HOST ADAPTER 6–11
USER MANUAL
1 2 3 4 5 6 7 8 9 10
U
P
UP = TEST MODE
DOWN = RUN MODE
UP = HIU/EHA–IO LOOP TES
DOWN = MHIU/EHA
Figure 6–3 Test Mode Dipswitch
When Position 10 of Dipswitch 2 is up, the test mode is selected. The test mode
performs all of the diagnostic tests performed in the run mode test and the
external loopback tests. Unlike the run mode test, when the test is completed,
the adapter remains in the test mode. If an error occurs, the LEDs will be lit in a
pattern that defines the particular test that failed.
NOTE
You must install the loopback connectors provided
with the adapter on Ports 3 and 4 to run the test mode
diagnostics. The Local Line ports, 1 and 2, perform an
internal loopback and do not require loopback
connectors. More details about these connectors and
their installation are given in the UNILINK Adapter
Installation and Operation Manual
(PPX:TIWAY–8106–x).
If any of the tests fail, recheck your power connections and the loopback
connectors (if installed) then rerun the test. Note that if the Host Adapter PIM is
not installed you will get the PIM Checksum Error. These diagnostic tests will
stop at the first error that occurs. Even though you make connection changes,
the original error may be corrected, but another may be displayed. If the same
error is continually displayed, the adapter will need to be repaired. Contact
your Siemens Industrial Automation, Inc. distributor or sales agent. If you need
assistance in contacting your distributor or sales agent in the U.S., call
800–964–4114.