Programming Manual

5. Interface Specifications

 

 

on-line, an X-Onis sent out. In the Single Job Buffer mode, when the printer receives a print job, it transmits an X-Offand begins printing. When it is done printing, it transmits an X-On. In the Multi Job Buffer mode, the printer sends an X-Offwhen the “Buffer Near Full” level is reached and a X-Onwhen the data level of the buffer drops below the “Buffer Available” mark. When the printer is taken off-line manually, it transmits an X-Offindicating it cannot accept data. When it is placed back on line manually, it sends an X-On, indicating it is again available for receipt of data. If an error occurs during printing (paper out, ribbon out), the printer sends noth- ing in the Single Job Buffer mode since the last character transmitted was an X-Off. When the error is cleared and the printer resumes printing, no X-Onis sent until the current job is completed and the printer is once again read to receive the next job. If it is in the Multi Job Buffer mode, it sends an X-Offas soon as an error condition is detected. When the error is cleared and the printer is placed back on-line, it transmits an X-Onindi- cating it is again ready to accept data.

Upon switch up, if no error conditions are present, the printer will continually send X-Oncharacters at five millisecond intervals until it receives a transmission from the host.

Cable Requirements

HOST

 

 

INTERCONNECTION

PRINTER

 

 

 

 

 

 

 

 

 

 

 

FG

 

 

 

 

 

 

 

 

 

1 FG (Frame Ground)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RD

 

 

 

 

 

 

 

 

 

2 TD (Transmit Data)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TD

 

 

 

 

 

 

 

 

 

3 RD (Receive Data)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 RTS (Request to Send)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5 CTS (Clear to Send)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6 DSR (Data Set Ready)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20 DTR (Data Terminal Ready)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SG

 

 

 

 

 

 

 

 

 

7 SG (Signal Ground)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data Streams

The data streams for X-On/X-Offare constructed in the same way as they are for Ready/Busy flow control. The STX and ETX control characters must frame the data stream. (NOTE: All characters, including STX, ESC and ETX are in ASCII).

<STX><ESC>A . . Job#1 . . <ESC>Z<ESC>A . . Job#n . . <ESC>Z<ETX>

Example: <STX>A . . Job#1 . . <ESC>Z<ETX>XXXXX

SATO RISC Printers

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SATO CL608/612, XL400/410, M8460S, M8490S, M-8400RV, M8485S, M8459S, CL408/412 manual Sato Risc Printers 175