INTERFACE SPECIFICATIONS
RS232C (9-pin connector layout)
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.)
RS-485 (RJ-11 connector layout)
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:
Non-inverting driver output/receiver input
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.
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
L8FL5/US (MPX-CD92, MD92 GB) 2000. 8. 31
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English