INTERFACE SPECIFICATIONS
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| RS485 termination switch settings (RS485 | |||||||||
| TERMINATE) |
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1 2 3 4 5 |
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| Termination setting |
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| If several unit are being connected together, termination settings must | ||||||||
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6 7 8 9 |
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| • Σετ | τηε | ΡΣ485 τερ∝ινατιον | σωιτχη ΟΝ,ον τηεανδ ρεαρσετ πανε | |||||
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| τηε τερ∝ινατιον σωιτχη οφ τηε λαστΟΝδεϖιχε. ιν τηε | ||||||||
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Pin No. | Signal | Operation | Signal direction | • Βε συρε το σετ τηε ΡΣ485 τερ∝ινατιον σωιτχηεσ οφ | ||||||||
1 | – | – | – |
| βετωεεν (δεϖιχεσ οτηερ τηαν τηε φιρστΟΦΦανδ. λαστ ιν | |||||||
Νοτε:Ιφ τηε τερ∝ινατιον σεττινγσ αρε νοτ χορρεχτ, δα | ||||||||||||
2 | RXD | Receive data |
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Computer → Διγιταλ ϖιδεο | βψ ειτηερ ενδ οφ τηε σεριεσ ανδ τηισ ωιλλ αφφεχ | |||||||||||
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| ρεχορδερ |
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| οφ οτηερ δατα, σο τηατ τηε δατα τηατ ισ τρανσ∝ι | ||||||||
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3 | ΤΞΔ | Τρανσ∝ιτ δατα Διγιταλ ϖιδεο→ ρεχορδερ |
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| Χο∝πυτερ |
| ωιλλ νοτ βε χορρεχτ. |
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| (Εξα∝πλε) |
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4 | – | – | – |
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5 | GND | Ground | – |
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6 | – | – | – |
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| System controller | ON | |||||
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7 | RTS | Request to | Digital video recorder → |
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| POWER |
| RS485 | 1 2 3 1 |
| Termination switch | |
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| 12V DC IN | ON | A | B | GND |
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| 0 |
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| send | Χο∝πυτερ |
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| A B | ADDRESS |
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| OFF |
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| TERMINATE |
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8 | – | – | – |
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| OFF | ||
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9 | – | – | – |
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Data formatMode | Asynchronous |
Character length | 8 bits |
Data transmit speed | 2400, 4800, 9600, 19200 bps |
Parity | None |
Stop bit | 1 |
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Communication protocolCommunication is carried out in units of 1 byte. After the computer transmits one byte of data, it waits for a response from the digital video recorder, and then transmits the next byte of data.
To start sending commands, an ON (F6) command is sent. The digital video recorder will continue to receive commands until an OFF (F7) command is sent to stop. The digital video recorder sends an ACK (OA) each time it receives a command.
See Command Table on page 92.
Data format
Mode | Asynchronous |
Character length | 8 bits |
Data transmit speed | 2400, 4800, 9600, 19200 bps |
Parity | None |
Stop bit | 1 |
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Communication protocol
A proprietary Sanyo protocol (SSP: Security Serial Protocol) is used. It is recommended that a special controller be used. Contact the place of purchase for further details on obtaining a special controller.
Digital video recorder
Digital video recorder
RS485
TERMINATE
ON
OFF
RS485
TERMINATE
ON
OFF
English | 91 |