SATO D508 Service Manual download pdf (Page 221)

Unit 6: Bi-Directional Communications

E/Pro Programming Reference

6-3 PN: 9001096E

ENQUIRE & RESPONSE

ENQUIRE (ENQ)

Upon receipt of an ENQ command, the printer responds with status information bounded by an STX/ETX pair. The

status information is defined as follows:

<STX>{ # Byte ID }{ # Status Byte }{ # Byte Label Remaining }{ # Byte Job Name }<ETX>

ID Identifies the current print job ID. Is defined using the Job ID (<ESC>ID)

command transmitted with the print job. (2 bytes)

Status Defines the current status of the printer. (1 byte)

Label Remaining Defines the quantity of labels remaining in the current print job. 6 bytes)

Job Name ASCII characters identify the assigned job name by the Job Name

(<ESC>WK) command. If the name is less than the required characters, the

field will be padded with zeroes. (16 bytes)

If an ENQ is received after the print job specified in the ID bytes has been completed, or the buffer is empty of data,

the printer will respond with “space” characters for the ID number (Remaining Labels & Job Name bytes).

The host computer transmits an ENQ to the printer which responds within five milliseconds unless actively printing.

If printing, it will respond upon finishing and then resume printing.

Refer to Appendix: Reference Tables 41 and 42 for additional information.

CANCEL (CAN)

If a CAN command is received, it will stop the print job and clear all data from the buffers. A delay of five

milliseconds is required before any new data may be downloaded. The CAN command is effective upon receipt,

even if the printer is offline or in an error condition. The printer will return an ACK if the printer is not in an error

condition and a NAK if an error condition exists.

PRINT JOB

Upon receipt of a valid print job (<ESC>A....<ESC>Z), an ACK will be returned by the printer if an error condition

does not exist and a NAK if an error condition exists. (Only for RS232 Interface)

PRINT STOP (DLE)

This command stops the printing process. Execution should be avoided while sending print or other data. If an

error condition occurs, a NAK is returned and an ACK is returned if one does not.

PRINT START (DC1)

This command enables the printer to exit the pause mode (DLE) by the request command to resume printing

(DC1). The host also sends an ENQ command to confirm execution. Execution should be avoided while sending

print or other data. Upon receipt of this command, an ACK is returned if an error condition does not exist and a

NAK if one does.

RETURN STATUS BYTES & FORMAT

1 5 2 5 2 6 1

STX Item Number Item Status

Item Number in

Process

Item Status in

Process

Issues of Item in

Process

ETX

1 2 ... 216 217 218 219 220 221 222 223 224 225 226 ... 289 290

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SATO D508 Service Manual Page 221

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