6
4.2 Mounting the Communications Module
Hold the communications module in place over the five standoffs on the main PCB and insert the 24-pin connector
on the ribbon cable into the 24-pin connector (P8) on the main PCB. If you are installing the RS-232/485 version,
insert the 6-pin power-cable connector into P9 on the main PCB. See Figure 4-2 below. Mount the communications
module on the threaded standoffs on the main PCB using the five screws provided.
6-32 x 3/8" Screw (5)
Comm Mod PCB
Power Cable
(RS-232/485 only)
Ribbon Cable with 24-Pin Connector
MJ-XL Main PCB
24-Pin Connector
P8
P9
Figure 4-2 Communications Module Installation
4.3 Setting the Communications Module Jumpers
Prior to installing the communication module into the MJ-X Control Panel, ensure that the jumpers are properly
installed on the printed circuit board. Jumper selections for the Fiber Optic version and RS232/485 version are
described in separate sections below.
4.3.1
Fiber Optic Version
The jumper locations on the fiber optic version are shown in Figure 4-3. The view of the module is from the
component side. The fiber optic receiver (RX) and transmitter (TX) are shown for reference. The jumper settings
are listed in Table 4-1.
Set Auto Repeat to no repeat when only one unit is installed in the network.
J11
J10
J12
1
2
J14
1
2
3
Figure 4-3 Fiber Optic Version Jumper Locations
Содержание MJ-X
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