RS-232C Interface

This interface complies with the RS-232C standard.

Basic Specifications
Asynchronous ASCII	Half-duplex communication Bi-directional communication
Data Transmission Rate	2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
Transmission Form	Start, b1, b2, b3, b4, b5, b6, b7, b8, Stop   • "b8" will be omitted if using 7 bit oriented.
Data Length	7 or 8 bits (initial value)
Stop Bit	1 (initial value) or 2 bits
Parity Bit	ODD, EVEN, NONE (initial value)
Codes Used	ASCII Character Codes 7 bits Graphics 8 bits
Control Codes	STX (02H), ETX (03H), ACK (06H), NAK (15H)
Connector	DB-9 Female or equivalent
Signal Level	High = +5 to +12 V, Low = -5 to -12 V
Protocol	• READY/BUSY • XON/XOFF • STATUS3 • STATUS4 • STATUS5

Connector Pin Specifications
Pin No.	I/O	Description
1	-	Data Carrier Detect
2	Input	Receive Data
3	Output	Transmit Data
4	Output	Data Terminal Ready
5	Reference	Signal Ground
6	Input	Data Set Ready
7	Output	Request To Send
8	Input	Clear To Send
9	-	Not connected

Cable Specifications
Cable Connector	DB-9 Male or equivalent
Cable Length	5 m (16.4 feet) or less

• When using the READY/BUSY control, make sure that the product is in power on mode before you send the data from the host. • With communication protocols such as XON/XOFF, STATUS3, STATUS4 or STATUS5, a receive buffer full error will occur when the received data is more than the receive buffer size (2.95 MB). When sending data, monitor the status of the product and keep the size of the data that is sent to less than 2.95 MB. • A parity error is detected when an error occurs after receiving the start code <A> command. • Specifications are subject to change without notice.