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Digital Monitoring Products
XR500/XR500N Installation Guide
16
INSTALLATION
J23 6-Pin Header
14.1 Description
The XR500/XR500N Command Processor™ panel supports RS-232, LX-Bus and future expansion operation. These
operations cannot function at the same time. Install a jumper on one pair of J23 headers to indicate how the panel
is programmed to operate. Refer to the table below when installing a jumper on J23.
J23 6-Pin Header
Letter
Operation
R
Standard RS-232
L
LX-Bus
X
Future Expansion
J22 LX-Bus Expansion Connector
15.1 Description
The XR500/XR500N Command Processor™ Panel supports up to
Þ
ve LX-Bus circuits. Each LX-Bus circuit provides 100
additional zones. The maximum number of LX-Bus zones available on a fully populated panel is 500. Use J22 LX-Bus
Header for 100 zones. Install a single Interface Card Connector on the board to increase to 200 zones. To install up
to
Þ
ve Interface Cards install a Model 461 Interface Adaptor Card.
15.2 J22 LX-Bus Header
Note:
J22 LX-Bus and J21 RS-232 connectors cannot be used at the same time. Either use J21 to connect a serial
device for Host Log Reporting, or use J22 to connect an LX-Bus device. This is determined by where you install the
jumper on J23 6-Pin Header.
To enable J22 to operate as an LX-Bus, place a jumper on the two pins next to the letter “L” on the J23 6-Pin
header. When using J22 as an LX-Bus, connect a DMP Model 300 4-wire Harness to the J22 4-pin header labeled
LX-BUS. This provides the
Þ
rst 100 LX-Bus zones numbered 500-599. No LX-Bus Interface Card is required. Respect
wire colors when connecting devices and use all four wires.
Note:
Do NOT use shielded wire when using the LX-Bus. Do NOT connect the wires from the 4-wire harness to the
panel terminals.
15.3 LX-Bus Interface Cards
You can add one Interface Card (Model 481, 462N, 462P, 462FM, and 472) to the XR500/XR500N using J6 Interface
Card Connector located on the board right edge. To add more than one Interface Card install a 461 Interface
Adaptor Card using J6 Interface Card Connector on the board right edge. The 461 Adaptor Card allows you to install
up to
Þ
ve Interface Cards. Refer to the 461 Installation Sheet (LT-0736). Each Interface card provides up to 100 LX-
Bus Zones. Refer to the following tables to identify zone locations and numbers relative to J22 operation.
J22 LX-Bus Enabled
AND
One Interface Card
OR
461 Adaptor Card and
Multiple Interface Cards
LX-Bus Zones Numbers
LX-Bus Zones Numbers
LX-Bus Zones Numbers
1
100
500-599
2
100
600-699
2 (A)
100
600-699
3 (B)
100
700-799
4 (C)
100
800-899
5 (D)
100
900-999
J22
LX-Bus
NOT
Enabled
One Interface Card
OR
461 Adaptor Card and
Multiple Interface Cards
LX-Bus Zones Numbers
LX-Bus Zones Numbers
1
100
500-599
1 (A)
100
500-599
2 (B)
100
600-699
3 (C)
100
700-799
4 (D)
100
800-899
5 (E)
100
900-999
LEDs
Xmit
Receive
J22
LX-Bus
J23
J21
RS-232
R
L
X
Overcurrent
LED
Figure 5: J23 6-Pin Header