- Sanyo Fisher Co. INSTRUCTIONS MANUAL Multiplexer MPX-CD163, MPX-CD93

INTERFACE SPECIFICATIONS
RS-232C
9-pin connector specifications
Pin No. Signal Operation Signal direction
1 ––
2 RXD Receive data Computer → Multiplexer
3 TXD Transmit data 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 transmit speed 2400, 4800, 9600, 19200 bps
Parity None
Stop bit 1
Communication protocol
Communication is carried out in units of 1 byte. After the computer transmits one byte of data, it waits for a
response from the multiplexer, and then transmits the next byte of data.
To start sending commands, an ON (F6) command is sent. The multiplexer will continue to receive
commands until an OFF (F7) command is sent to stop. The multiplexer sends an ACK (OA) each time it
receives a command.
See Table 4 - Command Table on page 79.
RS-485
RJ-11 connector specifications
Pin No. Pin A signals Pin B signals
1 Spare Spare
2 Spare Spare
3 Signal B Signal A
4 Signal A Signal B
5 Spare Spare
6 Spare Spare
Data format
Mode Asynchronous
Character length 8 bits
Data transmit speed 2400, 4800, 9600, 19200 bps
Parity None
Stop bit 1
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.
9876
54321
123456
English
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