protech PA-3170 Series, Руководство пользователя

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Chapter 2 System Configuration
PA-6970 SERIES USER
’
S MANUAL
Page: 2-15
2-11. CASH DRAWER CONNECTOR
DRW1: Cash Drawer Connector
The pin assignments are as follows:
PIN ASSIGNMENT
1 GND
2 Drawer Open
3 Drawer Sense
4 +12V
5 NC
6 GND
PB-3251 cash drawer control in GPIO port
To Open Drawer1 (GPIO 7):
Write "0"h to I/O space register "50C"h Bit 7
To Close Drawer1
Write "1"h to I/O space register "50C"h Bit 7
Detect Drawer1 Status
Read I/O space register "50C"h (GPIO 6)
Definition (bit4)