RS232c A/V Receiver help

[StealthRT]

Hey all, i am trying to turn on a A/V Reciever with a RS232 command using the VB6 comm32. To turn it on it says to use:

 Command code | Parameter code | CR  | Code set example
 PW           | ON             | <CR>| PWON<CR>

And this is my VB6 code i am currently using that doesnt seem to work...

   MSComm.CommPort = 2
   MSComm.RThreshold = 1
   MSComm.Settings = "9600,N,8,1"
   MSComm.InputLen = 0
   MSComm.PortOpen = True
   
   MSComm.Output = "PWON" & Chr$(13)
   MSComm.Output = "PWON" & vbCrLf
   MSComm.Output = "PWON" & vbNewLine
   
   MSComm.Output = "ZMON" & Chr$(13)
   MSComm.Output = "ZMON" & vbCrLf
   MSComm.Output = "ZMON" & vbNewLine

   MSComm.PortOpen = False
End If

The reciever never turns on. What could i be doing incorrectly? I checked to make sure the com port was 2 and it is.

The PDF of the rs232 commands can be found here for the Marantz SR7005: http://www.filefactory.com/file/b45c...ceiver_All.pdf

David

[DataMiser]

The first thing I would suspect is the comm port settings.

Baud Rate, Comport, and such. Make sure that your cable is attached to comm 2 and make sure that the device is actually expecting 9600,N,8,1

Also could be cable related. Are you using a straight through cable or a null modem?

[StealthRT]

Well for some reason i got it to work finally. I guess i needed to turn the unit on first then control it there after.

Thanks!