Yaskawa DR2 Sigma Servo User Manual
Page 394
SERVO SELECTION AND DATA SHEETS
5.6.15 Cables for Connecting PC and Servopack cont.
382
• Shift Control:
None
• Communications Method:
Semi-duplex
Servopack End (3CN)
RS-232C Port (Personal Computer End)
Shield
Case
Note: Maximum cable length is 2 m (6.56 ft).
3) Connection is also possible to the RS-422A port. In this case, the connection circuit is as
follows:
• Transmission Distance: 30 m (98.4 ft) max.
• Transmission System: RS-422A
Servopack End (3CN)
RS-422A Port (Personal Computer End)
Shield
Case
• Terminal Arrangement at Servopack End
Pin
#
Signal Name
Signal Circuit Name
Signal Direction
1
TXD
Transmit data (not inverted)
P←S
2
*TXD
Transmit data (inverted)
P←S
3
RXD
Receive data (not inverted)
P→S
4
*RXD
Receive data (inverted)
P→S
5
OPH
#
6
*RXD
Shorting pins 6 and 7 inserts 220 Ω termination resistance
7
RT
g p
between RXD and *RXD.
8
5VPP
#
9
GND
Signal ground 0 V
P: Personal computer
S: Servopack
#: Terminal not used, leave open.
5