3
1. CONTROL INTERFACE OVERVIEW
The manual for the DTR-5.2 should also be used with this document to understand how
this protocol can be used the DTR-5.2.
1.1.Hardware Overview
・ 3 wire RS-232C protocol
・ 9 pin female D type connector
pin 2 = transmit, pin 3 = receive, pin 5 = signal ground
・ Communication Parameters
9600 baud ,8 data bits ,1 stop bit
no parity ,no xon/xoff
1.2.Message Overview
Receive Message Format
Note : The Interval Time Receiving the message need to take more than 50msec.
Send Message Format
Special Character
[CR] Carridge Return Ascii Code 0x0D
[LF] Line Feed Ascii Code 0x0A
[EOF] End Of File Ascii Code 0x1A
1st 2nd 3rd-5th 6th- last
!1PWRQSTN[CR]
"[CR]"or"[LF]"
or"[CR][LF]"