Troubleshooting; Table 10 Troubleshooting Problems And Solutions - Honeywell NETAXS NX4L1 Installation Manual

9.0 Troubleshooting

Table 10 Troubleshooting Problems and Solutions

Problem
The panel
powers up, but it
does not respond
to any
communication,
cards reads, or
input activation.
No
communications
exist with the
Ethernet port.
The IP address is
incorrectly set to
verify the value.
The N1000
panels on the
Multidrop bus
do not report.
The BAD CRC
counter is
incrementing
every minute.
A dropline panel
in standalone
mode using
RS-232 may
unexpectedly fill
its buffer.
NetAXS Access Control Unit NX4L1 Installation Guide, Document 7-901099, Revision A
Solution
Ensure that the Address DIP switches are set to a value other than zero.
Turn off the power (including battery), change the settings, and re-apply
the power.
Only a panel set to be a Gateway (DIP switch 6 = ON) will have
communications on the Ethernet port. If you need to use that port to
access the panel, turn off the power (including the battery), change the
switch setting, and reapply the power. Note that if the panel is normally
not a Gateway on a Multidrop communication bus, then the Host
RS-485 connection (TB7) should also be disconnected while DIP
switch 6 is ON. After completion of the Ethernet session, turn off the
power (including the battery), change the switch setting, re-connect the
Host RS-485 terminal block, and re-apply the power.
If you are connecting directly to a computer instead of going through a
router or hub, use a cross-over Ethernet cable.
N1000 panels will not communicate to a NetAXS™ panel that is
configured as a Gateway. Replace all of the N1000 panels with
NetAXS™, or replace the Gateway panel with an N-485-PCI-2 device.
Two or more panels on the Multidrop Bus have the same panel address.
Verify that each panel has a unique address setting on DIP switch
positions 1-5.
The preferred solution is to configure the standalone panel through the
Web server as a Gateway and use the board PCI and AckNak communi-
cations. This also gives the user a more secure and reliable communica-
tions line.
Another solution is to execute a new command that will allow the user
to turn the Tesla flow control off:
_U=<pn>_D (disable flow control)
This prevents the panels from inadvertently filling their buffers.
To turn the Tesla flow control back on:
_U=<pn>_E (enable flow control)
NetAXS™ NX4L1 Installation
Troubleshooting
55