Appendix
74
Parallel Interface Connector
BUSY
Signal indicating that printer is unable to receive data.
Printer is able to receive data when this signal is
Low
.
PE
Signal indicating Paper Out of printer.
This signal is
Low
when paper is loaded and is
High
when paper is out.
SELECT
Signal indicating that printer is under online status.
Printer is capable of receiving data when this signal is
High
.
/AUTOFD
Signal used for bidirectional communication.
GND
Ground
VCC
Signal indicating that the power of printer is on.
This signal allows verifying ON/OFF status of power of printer and connection status of
printer cable.
/INIT
Signal for initializing printer.
Steady-state value is
High
.
Printer is initialized by
Low
.
/FAULT
Signal indicating that printer is faulty.
/SELIN
Signal used for bidirectional communication.
Signal name
Function