Hioki Super megohm SM7110 - Control by Using Commands

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RS-232C Interface
10.3 RS-232C Interface
Connecting the RS-232C cable
Be sure to read “Before connecting the communication cable to the instrument” (p. 14)
beforehand.
Connect the RS-232C cable to the RS-232C connector. After connecting the cable to the instrument
and another device, be sure to fasten the screws.
Rear
1 2 3 4 5
6 7 8 9
D-sub, 9 pins, pin contact
Mating xed base screw #4-40
For connection with a data terminal equipment (DTE)
Prepare a cross cable that meets the specications of the instrument and DTE connectors. The
input/output connector conforms to DTE specications. The instrument uses Pins 2, 3, and 5. The
other pins are not used.
Pin
no.
Signal name
Signal Remarks
Common EIA JIS
1 DCD CF CD Carrier detection Unconnected
2 RxD BB RD Receive data
3 TxD BA SD Transmit data
4 DTR CD ER Data terminal ready Fixed at on level (+5 V to +9 V)
5 GND AB SG Ground for signal
6 DSR CC DR Data set ready Unconnected
7 RTS CA RS Request to send Fixed at on level (+5 V to +9 V)
8 CTS CB CS Clear to send Unconnected
9 RI CE CI Calling indicator Unconnected
When connecting instrument to computer
Use a cross cable with 9-pin female D-sub connectors installed at both ends.
Cross connection
D-sub 9-pin, female
Instrument
D-sub 9-pin, female
PC/AT compatible
computer
PIN No. PIN No.
DCD 1
1 DCD
RxD 2 2 RxD
TxD 3 3 TxD
DTR 4 4 DTR
GND 5 5 GND
DSR 6 6 DSR
RTS 7 7 RTS
CTS 8 8 CTS
9 9
Recommended cable: Hioki Model 9637 RS-232C Cable (1.8 m)