RS-232C interface
1.Introduction
(1)The VTR can be operated by commands when the
(2)Conditions for acknowledging commands from
The front panel REMOTE/LOCAL switch must be at REMOTE.
The setup menu item No. 204 “RS232C SEL” must be ON.
If the above conditions are not met, [ACK] + [STX]ER001[EXT] is returned to the external unit.
Whether the [ACK] code is returned depends on the setting which has been selected for setup menu item No. 209 “RETURN ACK”.
2. Hardware specifications
External interface specifications
1) Connector specifications
Connector:
Pin No. | Signal | Circuit name | Description |
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1 | FG | Protective ground | Frame ground |
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2 | RXD | Received data | Data is sent to PC. |
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3 | TXD | Transmitted data | Data is received from PC. |
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4 | CTS | Clear to send | Shorted with pin 5. |
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5 | RTS | Request to send | Shorted with pin 4. |
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6 | DTR | Data terminal ready | No processing |
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7 | SG | Signal ground | Signal ground |
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20 | DSR | Data set ready | + voltage output after communication enable status |
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2)Example of connection with controller (PC)
■Using crossover cable with
PC side |
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connector) | VTR side |
FG | 1 | 1 | FG |
TXD | 2 | 2 | RXD |
RXD | 3 | 3 | TXD |
RTS | 4 | 4 | CTS |
CTS | 5 | 5 | RTS |
DSR | 6 | 6 | DTR |
SG | 7 | 7 | SG |
DTR | 20 | 20 | DSR |
■Using crossover cable with
PC side |
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connector) |
| VTR side |
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RXD |
| 2 |
| 1 |
| FG |
TXD |
| 3 |
| 2 |
| RXD |
DTR |
| 4 |
| 3 |
| TXD |
SG |
| 5 |
| 4 |
| CTS |
DSR |
| 6 |
| 5 |
| RTS |
RTS |
| 7 |
| 6 |
| DTR |
CTS |
| 8 |
| 7 |
| SG |
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| 20 |
| DSR |
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