NSK EDD Megatorque Motor - Appendix 7: Wiring of RS-232 C Communication Cable

Appendix
— A-24 —
Appendix 7: Wiring of RS-232C Communication Cable
 If any terminal other than the NSK Handy Terminal FHT31 is used, follow the specifications of the higher level
control device for wiring the RS-232C communication cable.
 Following examples shown in Figure A-24 and Figure A-25 are for the connection with a personal computer
compatible with DOS/V (D-sub 9 pins connector).
RTS control/CTS monitoring active (standard)
Fig A-22: Wiring example: With flow control
TXD
3
RXD
2
RTS
7
CTS
8
DSR
6
DTR
4
SG
5
FG
1
TXD
3
RXD
7
RTS
2
CTS
4
DSR
5
DTR
6
SG
9
FG
RS-232C terminal
EDC Driver Unit
CN1
RTS control/CTS monitoring inactive
 Since this connection applies to non-procedural communication, the Driver Unit Model EDD may fail to
read data if a large amount of data is received too quickly. Make sure that the Driver Unit Model EDD
echoes back, or leave spaces between the data transmission.
 Be sure to short the signals of RTS and CTS of the Driver Unit.
 Otherwise the communication will be disabled.
Fig A-23: Wiring example: Without flow control
1
TXD
3
RXD
7
RTS
2
CTS
4
DSR
5
DTR
6
SG
9
FG
RS-232C terminal
EDC Driver Unit
CN1
TXD
3
RXD
2
RTS
7
CTS
8
DSR
6
DTR
4
SG
5
FG
Driver Unit Model EDD
Driver Unit Model EDD