Datamax M-Class Operator's Manual page 56

GPIO PORT ♦
GPIO DEVICE
DISABLED
APPLICATOR
BARCODE VERIFIER
START OF PRINT
ACTIVE HIGH
ACTIVE LOW
END OF PRINT
LOW PULSE
HIGH PULSE
ACTIVE LOW
ACTIVE HIGH
48
Used to interface the printer to external controlling devices (see Appendix D).
Sets the GPIO Port to work with a specific type of device.
Disables the GPIO Port.
Enables the GPIO for a label applicator.
Enables the GPIO for a bar code verifier.
Programmable signal input that controls the Start of Print (SOP) process.
SOP signal must go 'high' for at least 50 milliseconds to initiate printing.
SOP signal must go 'low' for at least 50 milliseconds to initiate printing.
Programmable signal output that signifies the End of Print (EOP) process.
Outputs a low pulse (approximately 30 milliseconds long) following printing.
Outputs a high pulse (approximately 30 milliseconds long) following printing.
Outputs a logic 'low' following printing.
Outputs a logic 'high' following printing.
M-Class