AnsweredAssumed Answered

Controlling Com port RTS w/Visual Basic

Question asked by VRFuser on Mar 28, 1999
Latest reply on Mar 28, 1999 by VRFuser
Dear Fellow Veeites,
I'm using a RS232 to RS485 converter to talk to a half duplex network of
BASIC stamps.  Because it's half duplex, the sender has to use the RTS
handshake line to switch the RS485 converter to send mode.  I
implemented the protocol in HP VEE without a problem, only we intend to
use Visual Basic for the application.  The problem is VB seems to only
let the app. 'enable' the handshake lines but not directly control them!
Unless I've missed something, it seems like maybe there is a API in a
DLL somewhere that I could use?  Could anyone shed some light on this
for me?  Much appreciated!