Yaskawa SGDB - 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