Advantech PCI-1731 Specifiche Scaricare il pdf (Pagina 54)

APPENDIX C

PCI-1711/1731 User’s Manual

Advantech Co., Ltd.

www.advantech.com

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Write Digital Output

Bit # 76543210

BASE+17 DO15 DO14 DO13 DO12 DO11 DO10 DO9 DO8

BASE+16 DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0

Read Digital Input

Bit # 76543210

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.

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Advantech PCI-1731 Specifiche Pagina 54