INTERFACE SPECIFICATIONS
RS232C |
|
|
|
|
|
1 2 3 4 5 | 6 5 4 3 2 1 | |
6 7 8 9
Pin No. | Signal | Function | Signal direction |
1 | – | – | – |
2 | RXD | Data reception | Computer → Multiplexer |
3 | TXD | Data transmission | Multiplexer → Computer |
4 | – | – | – |
5 | GND | Ground | – |
6 | – | – | – |
7 | RTS | Request to send | Multiplexer → Computer |
8 | – | – | – |
9 | – | – | – |
|
|
|
|
DATA FORMAT
Mode | Asynchronous |
|
|
Character length | 8 bits |
|
|
Data transmission speed | 2400, 4800, 9600, 19200 bps |
| (set in the (SERIAL SET) menu) |
|
|
Parity check | None |
|
|
Stop bit | One bit |
|
|
TRANSMISSION PROTOCOL
The transmission is based on 1 byte units. After the computer has transmitted 1 byte, it will wait for an answer from this unit, then send the following byte of data.
The command ON (F6) is sent to start, and the command OFF (F7) is sent to finish. This unit will receive the commands, and will reply to each command by ACK (0A). (Refer to “COMMAND TABLE 4” on page 52.)
Pin No. | A terminal signal | B terminal signal |
1 | Not used | Not used |
2 | Not used | Not used |
3 | A signal | B signal |
4 | B signal | A signal |
5 | Not used | Not used |
6 | Not used | Not used |
|
|
|
A:
B:Inverting driver output/receiver input
Transmission line: 2 conductors
Transmission system: Half duplex
DATA FORMAT
Mode | Asynchronous |
|
|
Character length | 8 bits |
|
|
Data transmission speed | 2400, 4800, 9600, 19200 bps |
| (set in the (SERIAL SET) menu) |
|
|
Parity check | None |
|
|
Stop bit | One bit |
|
|
TRANSMISSION PROTOCOL
A proprietary protocol (SSP: Security Serial Protocol) is used. Operates using a Sanyo controller or a controller using containing this protocol.
48 | English |