Re: dummy terminal addresses

Lynette,

A couple of questions I have are:

1.) What type of controller are you attached to....

2.) What type of wiring is in use - twinax, twisted pair, twisted pair with
a hub, etc.  In the twinax world it is possible to have the daisy chain
affect.....twisted pair world less likely.

3.) With the terminals how are they acting?  I'm not that familiar with
3197's but you need to look for a System Availability (SA) indicator and
also make sure you know where the cursor is (upper right, or upper left).

The controller will use a hex addressing scheme that will correspond to a
port number and a address number.  Starting with 00 (port 0, address 0) and
moving down the port...01, 02, 03, 04, etc.

It is possible that you have a problem with the port itself.....rare but
I've had them get zapped on occasion.


Michael Crump
Manager, Computing Services
Saint-Gobain Containers
1509 S. Macedonia Ave.
Muncie, IN  47302
(765)741-7696
(765)741-7012 f
(800)428-8642

"The probability that we may fail in the struggle ought not to deter us
from the support of a cause we believe to be just"  Abraham Lincoln





midrange-l-bounces@xxxxxxxxxxxx wrote on 02/14/2006 09:24:03 AM:

> Ive found myself in a situation.  We no longer carry support on our
> remaining six 3197s.  Im having issues getting them to connect, and
> cant ask our Business partner to come and take a look...
>
> chain of events:
> Tuesday:  Warehouse decides they dont want one of the dummy
> terminals at their workstation, so they disconnect and remove.  They
> say everything else was working okay.
> Wednesday:  power blip.  All terminals will not respond.
>
> Ive tried everything i can think of, its been TOO many years since
> ive dealt with them, and i had limited experience back then.  The
> naming convention is DSP##.  I remembered how to print the  device
> addresses (PRTDEVADR), but it is not helping me.  There are 15
> devices listed on that controller.   I cant seem to figure out on
> the terminal itself what port it is assigned to???  The series of
> numbers at the bottom are confusing to me.
> I know that Cmd23 sets the address(switch).  i have series of
> numbers on the bottom of the screen..  ex:  10    4   0    3 (i blve
> the 3 is the switch in this case).
>
> Questions:
>
> I sort of remember if the terminals were daisy chained that if the
> first goes down, the rest behind are dead as well???
>
> If that is the case, them removing the terminal made the rest go
> down?  why not right away?  i replaced that terminal where it was,
> its still not working?
>
> I thought that if terminals were 'daisy-chained' that meant they
> were defined on the same port?  Two could possibly be on the same
> port, but not all 4. I have another terminal, a 3179 on another
> controller, working fine.
>
> It seems to make sense in my mind that if they are all down, there
> is a problem in the line?  I ruled out a problem with the
> controller.  There is a printer defined on that same controller, and
> that is working fine.  I have a tester (antique looking thing, it
> has a switch to set to 1, 0, or 2 and two amber lights and a green
> light)...  Im not even really sure how to use this!  How can i test?
>
> ive tried varying off all devices, varying off the controller and
> bringing them back up.  I can access the setup screen on all
> machines, does that tell me they are not dead?
>
> There have been no other changes on the system.  We do a scheduled
> re-ipl Sunday nights, which completed normally.
>
> Any suggestions would be so appreciated!!!  My whole warehouse have
> been using the same pc to access the system for 5 days now!!
>
> Lynette (Nettie) Chronister
> Programmer
> Phoenix Mecano
> Frederick, MD  21704
> 301-696-2145
>
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