Epson RP-U420 manual Print #1, CHR$&H1DrCHR$1 ← Transmits paper sensor status

C O N F I D E N T I A L

Bit	Off/On	Hex	Decimal	Function
5	Off	00	0	Validation sensor: paper present
	On	20	32	Validation sensor: paper not present
6	Off	00	0	Reserved
7	Off	00	0	Fixed
Drawer kick-out connector status (n = 2, 50)
Bit	Off/On	Hex	Decimal	Function
0	Off	00	0	Drawer kick-out connector pin 3 is LOW
	On	01	1	Drawer kick-out connector pin 3 is HIGH
1,2,3	Off	00	0	Reserved
4	Off	00	0	Fixed
5,6	Off	00	0	Reserved
7	Off	00	0	Fixed

Program Example for all printers

PRINT #1, CHR$(&H1D);"r";CHR$(1); ← Transmits paper sensor status

RP-U420 Status commands GS r Ver. 1.0 p. 68