OTHER FUNCTIONS
How to use the RS-232C connector
This input/output connector
A straight cable available on the market can be connected to this connector to exercise external control and send status information.
•Connector pin assignment
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| 1 | NC |
6 | 9 | 2 | TX |
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| 3 | RX |
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| 4 | NC |
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| 5 | GND |
1 | 5 | 6 | NC |
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| 7 | NC |
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| 8 | NC |
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| 9 | NC |
•RS232C Connection
Example: Reception Time Command (code 2011)
2 | 0 | 1 | 1 | CR |
0x32 | 0x30 | 0x31 | 0x31 | 0x0d |
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When transmitting commands consecutively, put more than 100ms blank between commands.
Received command data
Command | Code |
| Command | Code |
0 | 2000 |
| Pitch Down Start | 2039 |
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1 | 2001 |
| Pitch Down Stop | 203901 |
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2 | 2002 |
| Program | 2041 |
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3 | 2003 |
| AMS | 2043 |
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4 | 2004 |
| Open/Close | 2045 |
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5 | 2005 |
| Pause | 2048 |
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6 | 2006 |
| Cancel | 2049 |
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7 | 2007 |
| Fast Backward Start | 2050 |
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8 | 2008 |
| Fast Backward Stop | 205001 |
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9 | 2009 |
| Fast Forward Start | 2052 |
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Time | 2011 |
| Fast Forward Stop | 205201 |
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Recall/Scroll | 2015 |
| Play | 2053 |
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Random | 2028 |
| Stop | 2054 |
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Repeat | 2029 |
| 2059 | |
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Next | 2032 |
| Display (Dimmer) | 2071 |
ENGLISH
PMD325
Transmit Data | 2 |
Receive Data | 3 |
Ground | 5 |
(male)
Typical HOST
2Rx Data
3Tx Data
5 Ground
(female)
Previous | 2033 |
| Menu | 2082 |
Index + | 2034 |
| Enter | 2087 |
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Index - | 2035 |
| Text | 2088 |
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Pitch Reset | 2037 |
| Quick Replay | 205304 |
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Pitch Up Start | 2038 |
| Cue | 205910 |
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Pitch Up Stop | 203801 |
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•Status transmission
The wiring requirements for a 9 pin to 9 pin serial connection, are a male to female straight cable.
•RS-232C physical specifications
Cable | Straight cable |
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Baud rate | 9600 bps |
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Data bits | 8 bits |
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Parity bit | None |
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Stop bit | 1 bit |
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Flow control | None |
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•Command reception
The command packets have a data length of 5, 6 or 7 bytes. ASCII codes from 0x00 to 0x7f are used to receive serial data. At the transmission end, therefore, 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.
The status packets have a fixed data length of 4 bytes. ASCII codes from 0x00 to 0x7f 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 (0x0d) is added as the data packet delimiter.
Example 1: Transmission Power On (code PWON)
P | W | O | N | CR |
0x50 | 0x57 | 0x4f | 0x4e | 0x0d |
Transmitted status data
Status | Code | Description |
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Power On | PWON | Transmitted when the power is turned on. |
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Tray Open | TROP | Transmitted upon completion of tray open. |
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Tray Close | TRCL | Transmitted upon completion of tray close. |
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TOC Error | TOCE | Transmitted when a TOC read error has occurred. |
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TOC Reading | TOCR | Transmitted when TOC read is started. |
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No Disc | NODI | Transmitted when “No disc” is detected. |
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Stop | STOP | Transmitted when the disc has stopped. |
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| Transmitted along with the track number (xxx) |
Play | Pxxx | when play is started; also transmitted when |
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| the track number is changed during play. |
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Pause | Axxx | Transmitted along with the track number (xxx) |
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| when the pause status is established. |
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Fast Forward | FFON | Transmitted when Fast Forward is started. |
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Fast Backward | RWON | Transmitted when Fast Backward is started. |
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Repeat Off | RPOF | Transmitted when Repeat Off is set. |
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Repeat All | RPAL | Transmitted when Repeat All is set. |
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Repeat One | RPON | Transmitted when Repeat One is set. |
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Repeat A | RPA- | Transmitted when Repeat A is set. |
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Repeat AB | RPAB | Transmitted when Repeat |
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End Warning | ENDW | Transmitted when End Warning is started. |
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