8
Serial/Ethernet Communication (SCOM) Interface
IND100084-15
For Pin Out assignments, please review the following diagrams that covers all units and connector types:
10-pin RS-422 / RS-485 Module
“RS-422/RS-485 SCOM + Buzzer”
(Internal Buzzer can be controlled externally)
2 4 6 8 10
1 3 5 7 9
PIN 01*
RxD+
Receive Data Positive
PIN 02
GND
Ground
PIN 03*
RxD-
Receive Data Negative
PIN 04
+5V
+5V Out
PIN 05*
TxD+
Transmit Data Positive
PIN 06** BUZ-
Buzzer Control Negative
PIN 07*
TxD-
Transmit Data Negative
PIN 08** BUZ+
Buzzer Control Positive
PIN 09
GNDR
Ground 100Ω
PIN 10
GND
Ground
*Pin 1,3,5,7 = RS-485 Full Duplex (4-wire)
*Pin 5,7 = RS-485 Half Duplex (2-wire)
**See notes in
blue
.
Suggested “Buzzer” Control Logic inside
Computer/System:
Pin “6”
Logic Control
GND
+12V
NPN
Transistor
Rating:
500mA
Internal Side
External Side
Pin “8”
Connect T.Block
to upper row
Note:
To ensure that EMC requirements are met, we
recommend that the cable is screened and screen
is terminated/grounded at both ends with as short
as possible pig tail.
For Military/Naval use: +12V line from customer
system should be low pass fi lter or else the power
ripple may cause radiated emission to fail.
Use a cable that contains at least 2 wires (not 2
single wires). Test connection (beep) with Voltage
Meter. Wires may be combined if using RS-422/485
COM as well.
Connectors illustrated here are either standard by factory default or may be available (through factory customization).
Note that some combinations may not be possible due to space restrictions. List also valid for customized models. All
pin out assignments are seen from users Point of View (POV) while looking straight at the connector. Please review
the dedicated datasheet or technical drawings for your actual unit to identify and determine the presence of desired
connector.
**Buzzer - External Drive Logic:
• Able to supply 12VDC+-5%@100mA
• Short circuit protected at <500mA
• <50VDC from ground of Display unit
(Our input is isolated, this is layout limitation)
• Our input is classifi ed as signal input, not power.
Notes:
Unit may have several physical connectors available
for Buzzer control. Please only use RS-232 or RS-485
pins to control Buzzer, not both at the same time.
Series X (G1 - Generation 1):
• External drive logic can drive the buzzer even when
the Display Unit is off.
Series X (G2 - Generation 2) / MVD Series:
• Display Unit needs external power connected
to turn buzzer on. (Any logic power state).
