APPENDIX C
PCI-1711/1731 User’s Manual
Advantech Co., Ltd.
www.advantech.com
– 50 –
Write
Digital Output
Bit #
7
6
5
4
3
2
1
0
BASE+17
DO15
DO14
DO13
DO12
DO11
DO10
DO9
DO8
BASE+16
DO7
DO6
DO5
DO4
DO3
DO2
DO1
DO0
Read
Digital Input
Bit #
7
6
5
4
3
2
1
0
BASE+17
DI15
DI14
DI13
DI12
DI11
DI10
DI9
DI8
BASE+16
DI7
DI6
DI5
DI4
DI3
DI2
DI1
DI0
C.13 Digital I/O Registers — BASE+16 and BASE+17
The PCI-1711/1731 offers 16 digital input channels and 16 digital
output channels. These I/O channels use the input and output ports
at addresses BASE+16 and BASE+17.
Table C-12 Register for digital input
Table C-13 Register for digital output
Note!
✎
The default configuration of the digital output channels is a logic 0.
This avoids damaging external devices during system start-up or reset
since the power on status is set to the default value.
C.14 Programmable Timer/Counter Registers
BASE+24, BASE+26, BASE+28 and BASE+30
The four registers of BASE+24, BASE+26, BASE+28 and BASE+30 are
used for the 82C54 programmable timer/counter. Please refer to
Appendix D 82C54 Counter Chip Functions for detailed application
information.
Note!
✎
Users have to use a 16-bit (word) command to read/write each register.
