RS-232C interface
1.Introduction
(1)The VTR can be operated by commands when the
(See command table on page 60 – 62.)
(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[ETX] 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 | TXD | Transmitted data | Data is received from PC. |
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3 | RXD | Received data | Data is sent to PC. |
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4 | RTS | Request to send | Shorted with pin 5. |
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5 | CTS | Clear to send | Shorted with pin 4. |
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6 | DSR | Data set ready | + voltage output after communication enable status |
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7 | SG | Signal ground | Signal ground |
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20 | DTR | Data terminal ready | No processing |
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2) Example of connection with controller (PC) |
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■ Using straight cable with | ■ Using straight cable with |
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PC side |
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connector) | VTR side | |||||
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FG | 1 |
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| 1 | FG |
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TXD | 2 |
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| 2 | TXD |
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RXD | 3 |
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| 3 | RXD |
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RTS | 4 |
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| 4 | RTS |
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CTS | 5 |
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| 5 | CTS |
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DSR | 6 |
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| 6 | DSR |
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SG | 7 |
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| 7 | SG |
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DTR | 20 |
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| 20 | DTR |
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PC side
RXD | 2 |
TXD | 3 |
DTR | 4 |
SG | 5 |
DSR | 6 |
RTS | 7 |
CTS | 8 |
VTR side
1 | FG |
2 | TXD |
3 | RXD |
4 | RTS |
5CTS
6DSR
7SG
20 DTR
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