DCP552 Mark II Digital Control Programmer User's Manual

4-16
■ RS-232C connection
Handling Precautions
• Connect the slave station to the master station in a single-drop (point-to-
point) configuration.
• There are three (SD, RD and FG) communications terminals on the RS-
232C interface on the master station which may not output data if not
short-circuited as shown above.
NOTE
RS-232C connector signals (9 pins)
Example : IBM and compatibles
SD
61 63 64
RD SG
1 2 3 4 5 6 7 8
DCD RxD TxD DTR GND DSR RTS CTS
Host computer (master station)
Example of connection using
Chapter 4. WIRING
Pin No.
1
2
DCD
RxD
Name
3
TxD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
Signal direction
Host Instrument
→
→
→
←
←
←
←