YOKOGAWA F3LC11-1F, User Manual

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A1-9
IM 34M6H41-02E 2nd Edition : Aug. 1, 2005-00
A1.4 Cables and Switch Setting
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Connecting Cables
There are two types of RS-232-C cables: cross cable (null modem cable) and straight
cable (modem cable).
Use a straight cable (normally provided with the modem) when connecting to a modem
and use a cross cable, otherwise.
If the cable connector is female, convert it to male using a gender changer, etc. The
connector of this module uses M2.6 mm screws. Take note that cables for personal
computers often uses inch screws instead.
The connector specifications and cable interconnections are shown below.
Pin
no. Signal
name
2 RD
Receive Data
Data Terminal Ready
FA-M3
Higher-level
Always ON output in RDY state.
3 SD
4
ER
5
SG
6 DR
7
RS
8 CS
5
1
9
6
D-sub 9 pin (female)
Name
FA10401.VSD
Signal direction
Description
Send Data
Signal Ground
Data Set Ready
Request to Send
Clear to Send
Always ON input.
Always ON output in RDY state.
Always ON input.
Cannot send with OFF input
equipment
CAUTION
- The connector uses M2.6 mm screws. Take note that the cable for the personal
computer uses inch screws instead. If the cable connector is female, convert it to
male using a gender changer, etc.
- Transmission is not allowed if pin 8 does not turn on at the FA-M3
(F3LC11-1F/F3LC12-1F). When using a cross cable, use a cable with pin 7 and
pin 8 looped back.