AHIP-370 Manual
50
COM1 Connector RS-232/RS-485 (COM1_4)
Pin
Signal
Pin
Signal
1A
DCD1
1B
TXD-
2A
RXD1
2B
TXD+
3A
TXD1
3B
TXD TERM -
4A
DTR1
4B
TXD TERM +
5A
GND
5B
GND
6A
DSR1
6B
RXD-
7A
RTS1
7B
RXD+
8A
CTS1
8B
RXD TERM +
9A
RI1
9B
RXD TERM -
Note
‘A’ denotes the lower connector (RS-232) and ‘B’ denotes the upper
connector (RS-485).
Note
For TXD termination, connect a 150
Ω
, ½ watt resistor from pin 3B to
pin 4B, with pin 1B connected to pin 3B and pin 2B connected to pin
4B.
For RXD termination, connect a 150
Ω
, ½ watt resistor from pin 8B to
pin 9B, with pin 6B connected to pin 9B and pin 7B connected to pin
8B.
LPT1/COM2 RS-232 Connector (PARCOM2)
Pin
Signal
Pin
Signal
1A
STROBE
1B
ORB_GND
2A
PD(0)
2B
TXD2
3A
PD(1)
3B
RXD2
4A
PD(2)
4B
RTS2
5A
PD(3)
5B
CTS2
6A
PD(4)
6B
DSR2
7A
PD(5)
7B
GND
8A
PD(6)
8B
DCD2
9A
PD(7)
9B
NC
10A
PACK
10B
NC
11A
PBUSY
11B
PB_RESET*
12A
PE
12B
NC
13A
SELECT
13B
NC
Содержание AHIP-370
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