LRS-24 Installation and Operation Manual Chapter 2 Installation and Setup
Interfaces and Connections 2-21
Table 2-8. LRSI-F-1-CM2 Module Jumper Settings
Jumpers Controls Settings/Options
JP6, JP7, JP8 Major alarm relay connection To use the major alarm relay, install jumpers as shown in
Figure 2-11.
To disconnect the relay, remove the jumpers (for storage, you
may leave the jumpers inserted over one pin).
JP9, JP10, JP11 Minor alarm relay connection To use the minor alarm relay, install jumpers as shown in
Figure 2-11. To disconnect the relay, remove the jumpers.
JP1 through JP5 Connect internal transmit and receive pairs to the external UTP pairs (10BaseT connector) to allow
direct connection (without cross cables) as below:
Jumper Settings Receive Pair Transmit Pair
Over pins 1-2 Pins 1,2 Pins 3,6
Over pins 2-3 Pins 3,6 Pins 1,2
The correct selection depends on the wiring conventions used in your particular network,
however.
Normal jumper setting:
• CM-2 module connects directly to the LAN (this interchanges the connections of the receive
and transmit pairs): set the jumpers to position 2-3
• CM-2 module connects to an Ethernet hub: set the jumpers to position 1-2.
LRSI-F-1-CM2 Installation
➤ To install LRSI-F-1-CM2:
1. Check that the POWER switch of the interface module is set to OFF.
2. Insert the LRSI-F-1-CM2 module in the CL interface slot.
3. Fasten it with the two screws.
LRSI-F-2-CM2 Interface Module with 10Base2
This section explains the installation of the 10Base2 Interface module for the CM-2
module, LRSI-F-2-CM2.
LRSI-F-2-CM2 10B2 Front Panel
A typical LRSI-F-2-CM2 module front panel is shown in Figure 2-12.
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