HELP: Omron NT20 HMI programming cable

[profmaster 0]

Hi, I somebody know how to make this programming cable. I tried to made it one, but it's not working. I'm follow the RS232 comp pin and NT20 manual This the configuration what I have done. RS232 9pin (PC) 1 2 Read Data 3 Send Data 4 5 SG 6 7 RTS 8 CTS 9 NT20 9pin (HMI) 1 2 Send Data 3 Read Data 4 RTS 5 CTS 6 7 8 9 SG So, Pin 2 to Pin 2 Pin 3 to pin 3 Pin 5 to pin 9 Pin 7 & 8 short (PC) Pin 4 & 5 short (HMI) Is I right about this wiring? Please help for this. Thanks Edited 14 Jan 2009 by profmaster

[BobB 58]

Have you checked this http://forums.mrplc.com/index.php?autocom=downloads&showfile=74 Or this http://forums.mrplc.com/index.php?autocom=downloads&showfile=349 It pays to check the download section regularly and there are lots of goodies there.

[profmaster 0]

Thanks

[profmaster 0]

Still can't communicate with NT. Is that any switch that I need to prog before do downloading.

[PMCR 66]

To transfer (upload to NT or Download from NT) you need to put the NT into transmit mode. This is slightly different on different NT models, but here are the basics. Press any 2 corners of the touch surface of the NT at the same time. Click on 'Transmit Mode'. On some models you also need to click on 'Tool Transmit'. Then the NT will be ready to upload or download a program. PMCRh