Kingfisher Plus+ Hardware Manual
Option Board I: Isolated Serial
6.4.1 Overview
The isolated serial option board provides an RS-232, RS-485
or an RS-422 interface. The port is software configurable for
any of these modes. When RS-485 is configured for an
isolated serial option board, the RTS and CD LEDs are set ON
and when RS-422 is configured the RTS LED is set ON (there
are no LEDs set on for RS-232). RS-485 requires a 120 Ω
terminating resistor at each end of the transmission line and
RS-422 requires a 100 Ω terminating resistor at the receiver
end of the transmission line only (please see the
wiring diagrams at the end of this section).
Option Board I Specifications
Baud rate
300 – 115200 bps
Internal Power
Consumption
70 mA from +5 V
DC
Bus on backplane
Output Power
+4.3 V / 100 mA maximum
RS-422 Line drive
10 Receivers
RS-485 Line drive
32 Receivers
Communications
8 data bits, no parity, 1 stop (8, N, 1)
Isolation
Transient voltage: 2.5 kV
Operating Temperature
-40 to +85 °C
Storage Temperature
-40 to +85 °C
Operating Humidity
5 to 95 % RH (non-condensing)
RTU Hardware Required
Can be installed in any of the following ports:
CP-10/11/12/21/30 Port 2 or Port 3
MC-10/11/12/30/31 Port 2 or Port 3
LP-1/2 Port4
LP-3 Port 3 or Port 4
Hardware Manual Version 7.16
http://www.servelec-semaphore.com/
Page 99
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