NSK Megatorque PS Series - Appendix 6: Wiring of RS-232 C Communication Cable

To Next Page

To Previous Page

— A-20 —

Appendix 6: Wiring of RS-232C Communication Cable

 If any terminal other than the NSK Handy Terminal FHT21 is used, follow the specifications of

the terminal for wiring the RS-232C communication cable.

 Following examples shown in Figure A-15 and Figure A-16 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-15: Wiring example: With flow control

TXD 3

RXD 2

RTS 7

CTS 8

DSR 6

DTR 4

SG 5

1TXD

3RXD

7RTS

2CTS

4DSR

5DTR

6SG

9FG

RS-232C terminal

EDC Driver Unit

CN1

 RTS control/CTS monitoring inactive

！

Caution : Since this connection applies to non-procedural communication, the

Driver Unit may fail to read data if a large amount of data is received

too quickly. Make sure that the Driver Unit echoes back, or leave

spaces between the data transmission.

！

Caution : Be sure to short the signals of RTS and CTS of the Driver Unit.

Otherwise the communication will be disabled.

Fig A-16: Wiring example: Without flow control