User’s Manual
Kara BACnet Gateway
Page 8
2.2 Serial Port
The RS-232 comes with a DB9 Jack.
Pinning of DB9
connectors:
Pin
Jack
Usage
2
RXD
Receive from Level
convertor
3
TXD
Send to Level Convertor
4
-
Unused
5
GND
Ground potential
7
RTS
Handshake unused
8
CTS
Always active
The RS-2332 cable can be connected directly to a Level Convertor such as PW20 from
www.relay.de
.
3
HARDWARE WITH RS-485 (OPTIONAL)
The Gateway runs on a high quality Industrial Linux computer.
The Device is based on a 32 Bit ARM processor running at 200 Mhz.
Features:
·
ARM920T ARM Thumb Processor with 200MIPS at
·
180MHz, Memory Management Unit
·
One 10/100 Mbps Ethernet
·
One 3-in-1 RS-232/422/485 ports and three RS-232 ports
·
9 to 48 VDC Power input
·
3 USB
·
Two USB 2.0 full speed (12 Mbps) Host Ports
·
Optional DIN RAIL mounting adaptor
·
Ultra-low power consumption, less than 3 Watts
Dimensions: 78 x 108 x 24mm
Regulation: CE Class A, FCC Class A
Operation Temperature: 0 to 70C(32 to 158F)