Normal/Loopback Operation - Honeywell Intelliguard 9000 Installation Instructions Manual

Point-to-Point
When only two devices are connected to a line point-to-point
application, each device should have the termination network
connected to the line. Set switch S2 to the TERM position.
Multipoint
For multipoint applications, switch S2 should be in the
UNTERM position on all the RS-232 to 485/422 Converter
devices in the network except for the units at extreme
opposite locations on the line. The extreme opposite devices
are the two devices that have the longest cable length
between them, not necessarily the devices that are physically
located the farthest apart. These units should be set to the
TERM position. If other RS-232 to 485/422 Converters are
configured as Terminating , the amount of distortion could
increase—possibly causing errors in the data transmitted.

Normal/Loopback Operation

The Normal/Loopback switch S1 is a two position pushbutton
switch extending through the front panel. The normal position
permits normal operation of the RS-232 to 485/442 Converter.
The Loopback position allows data coming into the RS-232 to
485/422 Converter to be sent out the same port. This is to test
the connection between the RS-232 to 485/422 Converter and
the devices attached to each port.
NORMAL
When this switch is in the normal mode, data is passed
through the converter from the RS-232 port to the RS-485 port
and vice versa.
LOOPBACK
When set to the loopback mode, any data received at the RS-
485 is transmitted back out the RS-485 port and any data
received at the RS-232 is transmitted back out the RS-232
port. This feature is only available in 4-WIRE mode.
RS-485 Interface Line Biased (Fail Safe)
If S3 is in the OFF position, there is no line bias. If S3 is in the
ON position, there is line bias. Either an end device or the two
extreme opposite devices on the network should have the RS-
485 interface set to bias ON. The extreme opposite devices
have the longest cable length between them, not necessarily
the devices that are physically located the farthest apart. This
applies whether the configuration is point-to-point or
multipoint. In multipoint configurations all other devices should
have the bias turned off.
XSM/LINCNET
See Table 4 for XSM/LincNet settings.
Table 4. XSM/LincNet Settings.
Designation
XWIB
W8
W15
W5
W9
W17
W16
S1
S2
S3
25 PIN M/F Straight through cable
LINCNET INI Setup (V5.04.03)
Under the heading, add the following lines:
XSM
XSMtimeout=15
Quickbuild Channel Setup
Set Connect
Timeout to 20
Set Read Timeout
to 10
Windows Registry
Set connect time to
20
Set HostName to
LocalHost
31
INTELLIGUARD 9000™
Shunt/Jumper
Position Description
DCE
B-C 2-Wire
B-C Data Enabled
B-C RTS/CTS/CD DELAY
(CTS initiated if CD is
present when RTS is
raised.)
C 0 ms
E 0.15 ms
B 0.1 ms
OUT
ON
ON
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