Connector pin signals, Stb...strobe, Data 1-data 8 – Panasonic KX-P3124 User Manual
Page 102: Ack...acknowledge, Busy, Po...paper out, Slct...select, Auto feed xt (afxt)
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Connector pin signals
STB...STROBE
•This is a synchronizing input signal to read data into the printer.
•This signal is normally high. Data is read in when it goes low.
•The pulse must be low for at least 1 microsecond.
DATA 1-DATA 8
•These are the input signals which carry the 8 data bits of information.
•The signal is read in synchronization with the STROBE pulse. A high level indicates a logical “1".
•The signal must be present 0.5 microsecond before and after the STROBE pulse.
ACK...ACKNOWLEDGE
•This is an output signal to the computer indicating that the printer is ready to receive the next block
of data. It is sent out when the BUSY signal drops from high to low. Therefore, it can be thought of
as a data request pulse.
•The signal is normally high. When the condition becomes true, the signal goes low.
•The ACK signal is automatically sent whenever the printer is switched ON LINE.
BUSY
•This output signal indicates the status of the printer. The signal is high when the printer is busy and
cannot receive data.
•The signal is high under the following conditions:
1. receive buffer full
2. printer is processing data
3. printer is OFF LINE
4. printer is in an error condition
PO...PAPER OUT
•This output signal indicates that paper out detector detects the absence of paper.
•The signal is normally low and goes high during a “Paper Out" condition.
SLCT...SELECT
•SELECT is an output signal which indicates the ON LINE or OFF LINE state of the printer. The
signal is high in the ON LINE state and low when OFF LINE.
•The printer enters the ON LINE state;
1. when the printer is turned on .
2. when PRIME is received
3. when the RESET command is received
4. when the ON LINE switch is pressed
•The printer enters the OFF LINE state:
1. when the printer is out of paper
2. when the printer is switched OFF LINE
AUTO FEED XT (AFXT)
•This input signal determines if a line feed (LF) command will be added to each carriage return (CR).
•When AFXT is low, CR+LF action occurs. When AFXT is high, only a carriage return is performed.
•Auto LF setting in the Function mode can alter the response by the printer to an AFXT signal. If auto
LF is ON, the printer will perform a CR+LF regardless of the level of the incoming signal. When auto
LF is OFF, this automatic action is disabled.
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