Oxmoor MCS - Manual (Page 19)

Page 17
MCS-IB INTERFACE BOX CONNECTIONS
(Refer to Figure 2.6)
The MCS-IB Interface Box and the MCS-Mainframe
communicate with each other by a PA-422 serial
interface. The required data transfer cable will have a
male, 9-pin D-sub connector at one end and a female,
9-pin D-sub connector at the other.
1. PA-422 INPUT and OUTPUT - Interconnect the
MCS-IB and the MCS Mainframe. This may be
accomplished by either of two methods:
Either -
a. Plug the data cable into the PA-422 INPUT
on the MCS-IB and the PA-422 OUTPUT
on the MCS-CC Control Card.
Or -
b. Connect the data cable to the PA-422
OUTPUT on the MCS-IB and the PA-422
INPUT on the MCS-CC Control Card.
NOTE: Do not connect both the PA-422
INPUT and the PA-422 OUTPUT of the
MCS-IB to the MCS-CC.
2. PA-422 ADDRESS - Connect any other PA-422
devices used in the system to one of the
remaining PA-422 ports on the MCS-IB or the
MCS-CC. If additional PA-422 devices are
connected, be sure to establish different PA-422
addresses on each.
3. POWER - Connect the two DC output conductors
of the MCS-IB External Power Supply to the 12
VDC terminals on the MCS-IB rear panel as
illustrated. Connect the positive lead to the +
terminal and the minus lead to the COM
terminal.
4. After all system interconnections have been made,
plug the MCS-IB External Power Supply and the
MCS-Mainframe into the equipment rack’s 100-
130 VAC mains supply.
5. If the Interface Box is communicating with the
Mainframe, all tally LEDs will blink momentarily
and then stay on or off depending upon their
control line status.
If the Interface Box is NOT communicating with
the Mainframe, all tally LED’s will continue to
flash until communication is established.
Figure 2.6: MCS-IB Interface Box Connections
NOTE: PA-422
requires that a
device's address be
between 1 and 250.
Address 0, 251, 252,
253, 254, and 256
are illegal.
MCS-IB INTERFACE BOX CONNECTIONS
MCS-CC
PA-422
OUT
1
2
4
8
16
32
64
128
PA-422
ADDRESS
FUSE
POWER
OXMOOR
MADE IN USA BY
OXMOOR CORPORATION
BIRMINGHAM, ALABAMA
®
CHASSIS
PA-422
IN
MCS-MVP INTERFACE
PA-422 OUTPUT
MCS-MCP INTERFACE
PA-422 INPUT
+ 12V DC COM COM
P2
P1
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
+
+
MALE
+
+
RxD
FEMALE
_
RxD _
DSR
_ DSR _
DTR
_
+
+
TxD _
DRAIN (SHIELD) WIRE
DTR
_
+
+
TxD
_
PA-422 INTERCONNECTION CABLE WIRING
USE BELDEN
#9681 OR
EQUIVALENT
1
2
4
8
16
32
64
128
PA-422
ADDRESS
ON
FACTORY SET TO
ADDRESS 1