protech PS8852, Руководство пользователя

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Chapter 2 Hardware Configuration
Page: 2-12
PS8852 USER
’
S MANUAL
2-9. CASH DRAWER CONNECTOR
JCASH_DRW1 : Cash Drawer Connector
The pin assignment is as follows :
PIN ASSIGNMENT
1 GND
2 Drawer
Open
3 Drawer Sense
4 12V/24V
5 12V/24V
6 GND
Cash Drawer Control in GPIO Port
To Open Drawer
Step 0: Write “08h” to I/O Port “0x40B5”h
Write
“04h” to I/O Port “0x40B9”h
Step 1: Write”00h” to I/O PORT address “0x40B9h”
Step 2: Wait (1~2 seconds)
Write
“08h” to I/O Port “0x40B5”h
Write “04h” to I/O Port “0x40B9”h
Detect Drawer Status
Read I/O “0x40B9”h
Definition (BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0)
MSB LSB
Check whether BIT3=1
1: the drawer was OPENED
0: the drawer was CLOSED