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ENGLISH
5. CONTROL FEATURES
RS-232C CONTROL
Connect a male (D-Sub 9 Pin) to female (D-Sub 9 Pin) straight cable for RS-232C external control by host equipment.
• The RS-232C host can control functions of the DN-C640 externally
• The DN-C640 automatically transmits status data when status is changed.
• The DN-C640 will respond to status requests by transmitting the associated status data RS-232C specifications:
(1) Interface Condition
• Applicable connector : 9-pin D-sub (male)
• Baud rate : 9600 bps
• Data Bit : 8bit
• Parity : None
• Stop bit : 1bit
• Flow control : None
• Pin layout
RS-232C
Pin No Signal Name
1 Ground
6NC
2 TxD
7NC
3 RxD
8NC
4NC
9NC
5 S. Ground
(2) Control command codes
The control command packets have a data length of 7 bytes or more. ASCII codes from 0x00 to 0x7F are used to receive serial
data. At the transmission end, take steps to convert the ASCII codes into HEX data to set the data in the data
packets. CR (0x0D) is added as the data packet delimiter.
Example: Control command code for number 5 (ASCII code @02005CR)
When transmitting commands consecutively, put more than 100ms blank between commands.
@02005CR
0 × 40 0 × 30 0 × 32 0 × 30 0 × 30 0 × 35 0 × 0d
(3) Status Request and Status Information codes
The status data packets have a data length of 7 bytes or more.
ASCII codes from 0 × 00 to 0 × 7f are used to transmit serial data. For this reason, the ASCII codes are converted into HEX data
before the data is set in the data packets and transmitted. CR (0 × 0d) is added as the data packet delimiter.
Example: Status Information code “Disc In” (ASCII code @0 CDCI CR)
@0CDC ICR
0 × 40 0 × 30 0 × 43 0 × 44 0 × 43 0 × 49 0 × 0d