Experimental Physics and
Industrial Control System

Robert Emery <[email protected]> · Mon, 14 May 2007 15:26:25 -0700

I am using ASYN to communicate with 12 power supplies via an E5810
Ethernet/GPIB gateway from a Linux IOC. I am periodically (1 sec)
reading 24 parameters from the supplies (voltage and current for each
supply) and am setting the current (3 supplies at a time) when the
operator turns a dial at the console. The problem that I am having is
that when the current/voltage requests are processed I see about a 1 s
delay in the response to the current set messages.
It takes the power supplies about 50 ms to respond to a request for
current or voltage information. If these requests are backing up in the
ASYN port queue, I would make sense that I would see this type of delay.
Can I speed up the processing of my current set messages by setting up a
second ASYN port on the same IOC connected to the same gateway? With a
higher priority? Or is there a better way to speed up my set messages?
Thanks
Rob Emery
UW Medical Center

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System