Star Micronics SP2000 Manual do Utilizador descarregar pdf (Página 47)

FUNCTION

Transmits ENQ status

CODE

<ENQ>

(05)H

OUTLINE

Transmits the ENQ status of the printer to the host in real-time.

(Does not execute after taking fro reception buffer, but immedi-

ately upon receiving from the host.) It is in a “Data ready” state

when using a bi-directional parallel interface.

• When one <ENQ> command is sent to the printer, it will not

send the next <ENQ> command until the ENQ status is

received.

• When using the <ENQ> command, always set the automatic

status function to invalid.

b7 b6 b5 b4 b3 b2 b1 b0

Bit 0: Parallel Error (*1)

1: Error

Bit 1: Framing Error (*1)

1: Error

Bit 2: Mechanical Error

1: Error

Bit 3: No Paper Error (Same as EOT Bit 3)

1: Error

Bit 5: Buffer Empty (*1)

1: Buffer "Empty

Bit 6: Buffer Overflow

1: Overflow

Bit 7: Compulsion SW (*2)

ENQ Status

*1: Bit 0 and Bit 1 are valid only with a serial interface. Bit0 =

Bit1= 0 when using a parallel interface.

*2: Compulsion Switch

When the pin No. 6 on the connector for external device drive

circuit is HIGH (Switch ON), Bit 7 = 1.

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Star Micronics SP2000 Manual do Utilizador Página 47