User manual

ManualsBrandsAdvantech ManualsComputer equipmentUNO-3072L

UNO-3072L User Manual 24

Figure 2.7:

Isolated Digital

Output Connection

Note: Please refer to Appendix A.3 Table A.6 for command of DO

Note:

UNO-3072Lprovides built-in examples to show how to deliver

digital output functionality. Refer to console mode examples in C:\Pro-

gram Files\Advantech\UNO\UNO_IsaDIO\Examples\Console. (Please

install DI/O driver from the UNO CD to use these examples)

2.7 Onboard Isolated Counter/Timer

The UNO-3072Luses one 82C54 programmable timer/counter

chip that

includes

three independent 16-bit

down

counters: counter 0,

counter 1 and

counter 2.

Counter 0 and counter

1 are

for users, and counter 2 is specified

for

the

system and can’t be

used by user.

Each counter has

clock input,

gate

input and pulse output. They can be programmed to count from 2 up to

65535

or cascaded into one 32-bit

counter.

The UNO-3072Lhas two isolated counter input channels designated DI1

and DI3 with two isolated output channels designated DO2 and DO3.

Therefore,

you

can set

each counter of 82C54

counter function or timer

function.

2.7.1

Counter/Timer Control

The Counter/Timer Control Register controls the

function and

status

each counter/timer signal

source. Table

2.11

shows

the bit map of the

Counter/Timer Control Register. The register is readable/writable register.

While being written, it

is used

as a control register;

and

while

being read,

is used as

a status