Advantech Carbon Monoxide Alarm PCI-1718 Series User Manual
PCI-1718 Series User Manual
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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
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).
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.
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 #
7
6
5
4
3
2
1
0
BASE + 02H
CC3
CC2
CC1
CC0
Table C.9: Register for Digital Output
Write
Digital Output
Bit #
7
6
5
4
3
2
1
0
BASE + 03H
DO7
DO6 DO5 DO4 DO3 DO2 DO1 DO0
BASE + 0BH DO15 DO14 DO13 DO12 DO11 DO10 DO9 DO8