Yaskawa SGDB User Manual
Page 505
5.6 Specifications and Dimensional Drawings of Peripheral Devices
495
• Shift Control:
None
• Communications Method:
Semi-duplex
J
Connecting-circuit Specifications
Using the RS232C Port
SERVOPACK End (3CN)
RS-232C Port (Personal Computer End)
Shield
Case
Note: Maximum cable length is 2 m (6.56 ft).
/TXD
/TXD
/RXD
/RXD
Using the RS422A Port
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
/TXD
/RXD
/RXD
/RXD
/TXD
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
b
RXD
d /RXD
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