Advantech PCI-1718 Series Uživatelský manuál stáhnout pdf (Strana 76)

PCI-1718 Series User Manual 68

C.7 MUX Scan Channel Status — BASE+02H

Read register BASE+02H to get the current multiplexer (MUX) channel.

CC3 ~ CC0 Current channel number

CC0 The least significant bit (LSB) of the stop channel

CC3 The most significant bit (MSB)

C.8 Digital I/O Registers - BASE + 03/0BH

The PCI-1718HDU/HGU provides 16 digital input channels and 16 digi-

tal output channels. You read digital input data from registers

BASE+03H and BASE+0BH. After the read operation the input lines go

to three-state (data is not latched).

You write digital output data to registers BASE+03H and BASE+0BH.

The registers latch the output value (you cannot read it back).

Using the PCL-818HD/HD/L's input and output functions is fairly

straightforward. Chapter 3 gives some ideas for digital signal connec-

tions.

DO15 ~ DO0 Digital output data

DO0 The least significant bit (LSB) of the DO data

DO15 The most significant bit (MSB)

Table C.8: Register for MUX Scan Channel Status

Read MUX scan channel status

Bit # 76543 2 1 0

BASE + 02H CC3 CC2 CC1 CC0

Table C.9: Register for Digital Output

Write Digital Output

Bit # 7 6543210

BASE + 03H DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0

BASE + 0BH DO15 DO14 DO13 DO12 DO11 DO10 DO9 DO8

1 2 ... 71 72 73 74 75 76 77 78 79 80 81 ... 93 94

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Advantech PCI-1718 Series Uživatelský manuál Strana 76