Sanyo DSR - 300 manual Interface Specifications, RS-232C, RS-485

1INTERFACE SPECIFICATIONS

(when optional interface board is installed)

RS-232C

		1	2	3		4	5
			6	7		8	9
Pin No.	Signal			Operation					Signal direction
1	–							–	–
2	RXD			Reception					PC → Unit
3	TXD		Transmission						Unit → PC
4	–							–	–
5	GND				Ground				–
6	–							–	–
7	RTS		Transmission						Unit → PC
					request
8	–							–	–
9	–							–	–
Data format
Mode		Asynchronous
Character length		8 bits
Data transmission		2400, 4800, 9600, 19200 bps
speed
Parity check		None
Stop bit		1

Only the data transfer speed can be set. (JP. 69)

Communication protocol

Communication is carried out in units of 1 byte. After the PC has transmitted a single byte, it waits for a response from the unit before sending the next byte.

An ON (F6) command is sent as the start command, and the unit will continue to accept commands until an OFF (F7) command is sent as the end command. Whenever the unit receives a command, it returns an ACK (OA).

RS-485

When using RJ-11 connector

	1	6
Pin No.	Connector A signal		Connector B signal
1	Not used		Not used
2	Not used		Not used
3	A		B
4	B		A
5	Not used		Not used
6	Not used		Not used

A:Non-inverting driver output, non-inverting receiver input

B:Inverting driver output, inverting receiver input

Communication wire: 2-core wire

Communication system: Half duplex

Data format

Mode	Asynchronous
Character length	8 bits
Data transmission	2400, 4800, 9600, 19200 bps
speed
Parity check	None
Start bit	1
Stop bit	1

To set the data transmission speed, address and termination switch, see “Settings for RS-232C and RS- 485” (JP. 69).

Communication protocol

A proprietary Sanyo protocol (SSP: Security Serial Protocol) is used. Use of a Sanyo system controller is recommended.

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