Experimental Physics and
Industrial Control System

On Nov 24, 2014, at 2:54 PM, Mark Rivers <[email protected]> wrote:

Dirk and all,

 

I have a device that requires a command of the following format:

 

ratei NNNNN ml/h

 

where NNNNN is a number that is exactly 5 characters long including the decimal point.  For example if the rate is 9 then:

 

ratei 9.000 ml/h

 

If the rate is 10 then the string must be

 

ratei 10.00 ml/h

 

If one sends 10.000 (six characters) the command is rejected.

 

Is there a way to achieve this with streamDevice?

 

I can’t use the field width flag, since that just sets a minimum field width. I need to set a maximum field width.

 

I realize this is a ridiculous behavior for a device, but I need to deal with it.

 

Thanks,

Mark