Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Wed, 27 Mar 2013 13:27:40 +0000

The synApps "ip" module has some very simple support.  In fact here it is!

corvette:ip/ipApp/Db>more SR630.db

grecord(asyn,"$(P)$(R)$(N)_READ")
{
        field(PORT,"$(PORT)")
        field(AOUT,"MEAS?$(N)")
        field(FLNK,"$(P)$(R)$(N)")
        field(SCAN,"$(SCAN)")
}

grecord(scalcout,"$(P)$(R)$(N)")
{
        field(INAA,"$(P)$(R)$(N)_READ.AINP NPP NMS")
        field(CALC,"$S(AA,'%f')")
        field(PREC,"$(PREC)")
        field(DESC,"$(DESC)")
}

So it's just an asyn record and an scalcout record to read channel N.

> Also, why does its' RS232 interface come in the DB25 form factor?
> I had expected it to be a standard DB9 (COM). Any ideas how to hook it up to the good old DB9 port?

You must be way too young!  DB-25 was the standard for RS-232 in the old days of dialup connections with modems.  DB9 is the "new-fangled" type of connector, made popular with the PC I think.  You can Google RS-232 wiring to see the pin definitions on DB25 and DB9.

The basic signals on DB9 are pin 2 receive data, pin 3 transmit data, pin 5 ground.  On DB25 pin 2 is transmit data, pin 3 is receive data, and pin 7 is ground.  Of course the definitions of "transmit" and "receive" depends whether you are data terminal equipment (DTE) or data communications equipment (DCE).

Mark

________________________________
From: [email protected] [[email protected]] on behalf of Pavel Maslov [[email protected]]
Sent: Wednesday, March 27, 2013 8:08 AM
To: EPICS Tech Talk
Subject: Stanford Research SR630 Thermocouple monitor

Hi,

Does anybody have device support for the SR630 thermocouple monitor?
Also, why does its' RS232 interface come in the DB25 form factor? I had expected it to be a standard DB9 (COM). Any ideas how to hook it up to the good old DB9 port?

--
Best regards,

Pavel Maslov, MS
Controls Engineer at Pulsed power Lab
Efremov Institute for Electro-Physical Apparatus
St. Petersburg, Russia

Mobile: +7 (951) 672 22 19
Landline: +7 (812) 461 01 01

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System