Toshiba AS311 user manual Transmission specifications, Specifications

2. Specifications

2.3 Transmission specifications

Item	Channel 1		Channel 2
Interface	RS-232C or RS-422		RS-232C
Transmission mode	Full-duplex
Synchronizing	Start-stop method (asynchronous)
Transmission speed	300, 600, 1200, 2400, 4800, 9600, 19200 bps
Frame format	Start bit	1 bit
	Data	7 or 8 bits
	Parity	even / odd / none
	Stop bit	1 or 2 bits
Transmission code	ASCII
Message length	Max. 896 bytes
Configuration	One to one	(Note)
Transmission distance	Max. 15 m (RS-232C)		Max. 15 m
	Max. 1 km (RS-422)
Connector	D-sub 25-pin female		D-sub 25-pin female

Note) In case of RS-422 interface, multiple devices can be connected to one AS311 if the connected RS-422 devices work as slave stations and support multi-point connection. That is, the connected RS-422 devices must have the transmission generators which support the passive state. Also, the RS-422 devices must support the message format which contains the selecting address. In this case, the number of the connected RS-422 devices is limited up to 10.

On the other hand, the AS311’s transmission generator does not support the passive state. Therefore the AS311 must be the master station in the one-to-N configuration.

User’s Manual 17