Specifications
2-8
PL-5700 Series User’s Manual
5
RS-485 Interface (COM3)
<Interface Circuit>
SN751178N
or equivalent
TD+
TD-
RD+
RD-
GND
FG
J9
220
220
J10
DB 9 pin male connector
1 2 3 4 5
6 7 8 9
RXD
7
6
5
4
3
2
1
M3 screws
TXD
DTR
Use the GND and FG terminals only when the connected device requires them.
This unit’s RS-485 (RS-422) Port is not isolated, there-
fore, it is crucial that you connect the SG/GND (Signal
Ground) terminals. If this is not done, the RS-485 (RS-
422) circuit may be damaged.
4
RS-232C Interface (COM1/COM2)
JEY-9P-1A3A14
- by J.S.T, or equivalent
*1 : With COM2, pin 9 can be configured for +5 V output, via a jumper.
See next page’s “
2-3, 6 Jumper Settings
”.
Pin No.
Signal
Pin No.
Signal
1
CD
6
DSR
2
RXD
7
RTS
3
TXD
8
CTS
4
DTR
9
RI/(5V)*
1
5
GND
Pin No.
Signal
1
TD-
2
RD-
3
TD+
4
RD+
5
GND
6
FG
7
NC