Honeywell NX4S1 Installation Guide - Page 59

Technical Support

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NetAXS™ NX4S1 Installation Technical Support Table 8 Troubleshooting Problems and Solutions Problem Solution A dropline panel in standalone mode using RS-232 may unexpectedly fill its buffer. The preferred solution is to configure the standalone panel through the Web server as a Gateway and use the board PCI and AckNak communications. This also gives the user a more secure and reliable communications line. Another solution is to execute a new command that will allow the user to turn the Tesla flow control off : _U=_D (disable flow control) This prevents the panels from inadvertently filling their buffers. To turn the Tesla flow control back on: _U=_E (enable flow control) Note: The NetAXS™ EOL network is AC-coupled. There is no resistance difference between the RS-485 positive and negative terminals if the EOL network is on or off (J36 and J37). 10.0 Technical Support 10.1 Normal Support Hours Monday through Friday, 7:00 a.m. to 7:00 p.m. Central Standard Time (CST), except company holidays: (800) 323-4576. 10.2 Web For technical assistance please visit http://www.honeywellaccess.com NetAXS Access Control Unit NX4S1 Installation Guide, Document 800-00008, Revision A 49

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NetAXS™ NX4S1 Installation
Technical Support
NetAXS Access Control Unit NX4S1 Installation Guide
,
Document 800-00008, Revision A
49
Note:
The NetAXS™ EOL network is AC-coupled. There is no resistance difference
between the RS-485 positive and negative terminals if the EOL network is on or off
(J36 and J37).
10.0
Technical Support
10.1
Normal Support Hours
Monday through Friday, 7:00 a.m. to 7:00 p.m. Central Standard Time (CST), except
company holidays: (800) 323-4576.
10.2
Web
For technical assistance please visit http://www.honeywellaccess.com
A dropline panel
in standalone
mode using
RS-232 may
unexpectedly fill
its buffer.
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 communi-
cations 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)
Table 8
Troubleshooting Problems and Solutions
Problem
Solution