SATO GL4XXE Manual de Serviço descarregar pdf (Página 21)

Unit 3: Interface Specifications

GL4xxe Service Manual

3-4

RS232C HIGH-SPEED SERIAL INTERFACE

This High Speed Serial Interface is a standard connection in the GL4xxe series printers. The serial interface circuit

characteristics are compatible with the Electronic Industry Association Specifications EIA®-232-E and EIA-422-B.

INTERFACE SPECIFICATIONS

Asynchronous ASCII Half-duplex communication

Bi-Directional Communication

Data Transmission Rate 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 and 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 bit (selectable)

Stop Bit 1 or 2 bit (selectable)

Parity Bit ODD, EVEN, NONE (selectable)

Codes Used ASC II Character Codes: 7 bits, Graphics: 8 bits

Control Codes STX (02H), ETX (03H), ACK (06H), NAK (15H)

Connector (Printer Side) DB-9S Male (equivalent), 9-pin Serial Interface (PCI)

Cable Connector DB-9P Female (equivalent), 9-pin Serial Interface (PCI)

Cable Length 15 meters or less

Signal Levels High = +5V to +12V, Low = -5V to -12V

Protocol Ready/Busy, X-On/X-Off, Protocol for Driver, Status4, Status5

READY/BUSY INTERFACE SIGNALS

PIN DIRECTION SIGNAL DEFINITION

1 To Printer Data Carrier Detect (DCD) - Status signal to the printer. The ON condition is required for the

printer to receive data

2 To Printer Receive Data (RXD) - Serial data stream to the printer

3 To Host Transmit Status & Control Data (TXD) - Serial data stream from the printer for transmitting

status and control information to the host. Subject to protocol selection

4 To Host Data Terminal Ready (DTR) - Control signal from the printer. Subject to configuration.

5 Reference Frame Ground

6 To Printer DSR (Data Set Ready) - When this line is high, the printer will be ready to receive data. This

line must be high before data is transmitted. If this line is not being used, it should be tied high.

7 To Host Request To Send (RTS) - Control signal from the printer. Subject to configuration

8 To Printer Clear To Send (CTS) - Status signal to the printer indicating the host is ready to receive data/

status signals from the printer.

NOTE: Depending on the host used, it may be required to loop CS and RS

(maintaining at high-level) on the host side. For more information, refer to the host

computer documentation.

NOTE: Refer to the Chapter 4, Charts and Diagrams for Ready/Busy and X-ON/X-

OFF timing charts.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 203 204

Sem comentários

SATO GL4XXE Manual de Serviço Página 21