greetings,  
if I understand your question correctly, I believe this behaviour is as
HP intended regarding programmatically opened nailed devices
(DTC-ports): i.e. they do count as an ordinary session (towards licensed
userlimit).  
We have some 40 lab-robots wich are controled this way, and, even though
licensing is not a problem for us, we are replacing these connections
with a PC that controls the lab-robot through serial interface, and
comunicates with an hp3000-listener-process over the net (tcp/ip).

hth
/per
--------------------------------------------
Per Ostberg  / [log in to unmask]
phone +46-8-58581213 / fax +46-8-58587710
Huddinge University Hospital
ChemLab / C1 74 / S-141 86  HUDDINGE / SWEDEN
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> Hi,
>  
> I have a automat connected on a DTC port and a cobol open this DTC
port for
> dialing with
> the automate (something simple). But when i examine the system
variable i
> notice that
> the automat has open a session !!!
> Is there a method for communicate with a automat one having to open a
MPE
> session ?
> The reason is the number of MPE licences witch is limited.
>  
> Thanks for your input.
>  
> Armel Dollé
> Comptoir Agricole
>