User manual

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Diagnostic T ests and T roubleshooting
5-7
T able 5-1 Peerlink T roubleshooting Chart (Continued)
Symptom Possible Problem Solution
Module passes If you have pressed This is normal. It
power -up test; RESET , it may take may take the P/C COMM
MODULE the module several GOOD indicator a few
GOOD light scans to log itself seconds to light.
is on, but P/C back in.
COMM GOOD
does not come
on for several
seconds.
P/C COMM The Peerlink module Move Peerlink to
GOOD may be in a distributed the local base.
indicator stays base. It should Set the appropriate
off. be in the local I/O V Memory output
base. words (WYs) for the
new slot location.
or or
Module not logged Log in the Peerlink
into I/O configuration module.
table.
MODULE Peerlink station has Check dipswitch
GOOD, the same address as settings for network
RECEIVE, and the active monitor . address; change as
P/C COMM necessary.
GOOD light,
but
TRANSMIT
stays off.
TRANSMIT or Excessive communication Check that terminating
RECEIVE errors are occurring resistors are installed
indicators because of an properly . See page 3-13
flash. improperly terminated of this manual
line.
Module
No network Check to see that
GOOD and communication is taking all modules are
P/C COMM place. connected correctly ,
indicators are that station numbers
on; all others are unique, and that
are off. exactly one module is
selected as the
active monitor .