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Control Codes
PcOS Series 80PLUS
Programmer's Guide
Printer Status
Page 50
Rev B 4/13/99
Function
Inquire receipt paper out
ASCII
[ENQ] <4>
Hexadecimal
05H 04H
Decimal
<5><4>
Function
Is receipt paper out?
Response
ACK <4> (06H 04H)
There is receipt paper.
NAK <4> (15H 04H)
The receipt paper is exhausted.
Function
Inquire cover open status
ASCII
[ENQ] <8>
Hexadecimal
05H 08H
Decimal
<5><8>
Function
Inquire whether the cover is closed.
Response
ACK <8> (06H 08H)
The cover is closed.
NAK <8> (15H 08H)
The cover is open.
Function
Is the buffer empty? Clear IEEE 1284 buffer.
ASCII
[ENQ] <9>
Hexadecimal
05H 09H
Decimal
<5><9>
Function
This command allows the host to know when the print buffer is empty.
If IEEE 1284 is active, this command also clears the response buffer.
Response
ACK <9> (06H 09H)
The buffer is empty.
NAK <9> (15H 09H)
The buffer is not empty.