I am using a TSU9600 to control a RFX9600. This RFX9600 uses serial control for a Denon 4306 Receiver, an Elan V883 component Switcher, and hopefully, a Denon 1930ci DVD player.

I had no trouble controlling the Elan piece using the following settings:

Command: Output1 Input 1

Baud:19200
Parity: None
Data Bits: 8
Stop Bits: 1

Send:1
Repeat until: 100ms

ACSII Command: '&V883,KEY,006\r'

No Problem for the Elan piece.

No Problem with the Denon Receiver:

Command: Power On

Baud:9600
Parity: None
Data Bits: 8
Stop Bits: 1

Send:1
Repeat until: 100ms

ACSII Command: 'PWON\r'

I am having problems with the Denon DVD player. It appears I could use the hex format to control the DVD, but, I would think, since I am using one way communication that an ASCII set would work. Any help in this regard would be appreciated.

Attempted Command: Power off

Command: Power Off

Baud:9600
Parity: Even
Data Bits: 8
Stop Bits: 1

ACSII Command: '!\r'

I feel like am missing some kind of prefix, and suggestions on the ASCII front?