Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Can I use the RTS/CTS Flow Control setting in the Link Wizard to talk from DirectSOFT to DL PLC?

April 26, 2017CONTROL CTS directsoft DL flow link RTS setting talk Wizard

0

Posted

Can I use the RTS/CTS Flow Control setting in the Link Wizard to talk from DirectSOFT to DL PLC?

1 Answer

0

Posted

No. The reason is that the PLC port does not listen to its CTS line for incoming data. It only uses the Flow Control RTS/CTS lines when it wants to send data. So, if you choose RTS/CTS Flow Control in DirectSOFT, then when DirectSOFT wants to talk to the PLC, it will set the RTS line, which, if wired correctly, would tell the PLC it wants to send data. However, because the PLC is not listening to that line, it would never send DirectSOFT the CTS, so DirectSOFT would time out.