Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Thu, 7 Nov 2002 14:01:53 -0600

Thanks for the replies regarding extending MBBO.

In my case I have a digital multimeter with 22 input channels.  I wanted an
medm screen with 22 radio buttons, so one and only one could be pressed at
once.  There does not seem to be a simple way to do this.

My solution was to have 3 MBBO records:
- channel_range selects "1-10" or "11-22"
- channel_1 selects "Ch1", "Ch2", ... "Ch10"
- channel_2 selects "Ch11", "Ch12", ... "Ch22"

There is an medm menu for channel_range that is always visible and selects
channel range 1-10 or 11-12.  Depending on the value of that menu item,
radio buttons for channels 1-10 or 11-12 are visible.  They occupy the same
location on the screen.

In my case the logic for the channel_1 and channel_2 MBBO records is done
using an SNL program, but a database could be used as well.

This solution works fine, and occupies less screen real estate than 22
buttons anyway.

Thanks,
Mark Rivers

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System