Chapter 4:
Querying the Printer
63
O’Neil Programming Language Reference Manual
Card Reader Status Query
Card Reader Status Reply Explanation
Card Reader Status Query
Query Format
ESC{RS?}
Reply Format
{RS!
P
:n;
S
:n;
G
:n;
R
:n}
Function
Returns data read for a swiped magnetic card. The reply to
the card reader status query can be automatically generated
if the AutoSend option is on.
Reply Example
{RS!
P
:0;
S
:0;
G
:0;
R
:0}
Reply
Explanation
RS! - Reply to a card reader status query.
P
:0; - SmartCard power is off.
S
:0; - A card is not seated in the reader.
G
:0; - The green LED is off.
R
:0; - The red LED is off.
Query Reply
Definition
P
0,1
0=SmartCard power is off; 1=SmartCard power is on.
S
0,1
0=A card is not seated in reader; 1=A card is seated in
reader.
G
0,1,F
0=Green LED is off; 1=Green LED is on; F=Green LED is
flashing.
R
0,1,F
0=Red LED is off; 1=Red LED is on; F=Red LED is
flashing.
Summary of Contents for microFlash2
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