Increasing the RS-232 default timeout from 1000ms to 3000ms

[mikejec]

I need to increase the time-out on an RS-232 channel to 3000ms instead of default 1000ms. No Flow control though.


Is the following correct?
Change this
Com = 16384

OPEN "COM7: 57600,N,8,1,ds0,cs0,rs" FOR RANDOM AS #1
To this
Com = 16384

OPEN "COM7: 57600,N,8,1,ds3000,cs3000,rs" FOR RANDOM AS #1

[Rod]

If you use the default open statement the flow control and timeout are effectively off. Liberty will wait forever for coms data. If your link has no flow control there is no point in setting ds or cs

So if you want to timeout after 3000ms then just set a timer. Check the buffer for data every 500ms say, if you get data reset the counter, if not increment the counter. When you get to 7 that’s your timeout.

[mikejec]

Thanks Rod, That is easy enough. I will try that.
Mike