Gould 884 and Gray Soft

[ChefGroovy]

I'm trying to get a Gould 884 Modicon PLC to talk a PC via Gray-Soft (version 2.02). I got a serial cable and all should be well and good, but still says cannot connect.

All this stuff is ancient, 1990 at least. I seem to remember back around that time I used to have to use a "fossil" driver to get serial modems to work, I was running a BBS so maybe that was jsut get it to answer, been a long time. Any idea if this is needed for Graysoft?

btw Running DOS 6.22, since the dongle thing won't work under 98/2000

 

[ChefGroovy]

well, hate to answer my own question, but I did some experimenting, and the serial cable to connect a PC to 884 is:

884 PC
--------------
Pin 2 | Pin 2
Pin 3 | Pin 3
Pin 7 | Pin 5

On 884, short pins 4 to 5 and 6,8,20
On PC short pins 7 to 8 and 6,4,1

took me a while to figure it out, but pays off, now got program on floppy and up on the server. No more datatapes!!! woot

Dan Shaffer

 

[silvertwist]

I wonder if that type of cable connection is for a later version of PC because the docs I have show something quite different:

884 PC
--------------
Pin 1 | Pin 1
Pin 2 | Pin 2
Pin 3 | Pin 3
Pin 7 | Pin 7

On 884, short pins 4 to 5 and 6,8,20
On PC short pins 4 to 5 and 6,8,20

What do you mean when saying "got program on floppy and up on the server"? I have had this 884 since 1985 and my software would never get fast enough to transfer to and from the internet at anything close to 28 or 56K modem speed.

R. Hollaus

 

[silvertwist]

Correction, I am misleading. I meant to post that connection to be for a directly connected PC -no modems, and in that case it would be:

884 PC
--------------
Pin 1 | Pin 1
Pin 2 | Pin 3
Pin 3 | Pin 2
Pin 7 | Pin 7

On 884, short pins 4 to 5 and 6,8,20
On PC short pins 4 to 5 and 6,8,20

But your probably looking at using a modem and don't need this anyway. SORRY about that.

R. Hollaus