Advantech PCI-1710HG Especificaciones descargar pdf (Pagina 147)

137

BCD Select binary or BCD counting

BCD Type

0 Binary counting 16-bits

1 Binary coded decimal (BCD) counting

If you set the module for binary counting, the count can be any

number from 0 up to 65535. If you set it for BCD (Binary Coded

Decimal) counting, the count can be any number from 0 to 9999.

If you set both SC1 and SC0 bits to 1, the counter control register is in

read-back command mode. The control register data format then

becomes:

BASE + 30(Dec) 82C54 control, read-back mode

Bit D7 D6 D5 D4 D3 D2 D1 D0

Value 1 1 CNT STA C2 C1 C0 X

CNT = 0 Latch count of selected counter(s)

STA = 0 Latch status of selected counter(s)

C2, C1 & C0 Select counter for a read-back operation

C2 = 1 select Counter 2

C1 = 1 select Counter 1

C0 = 1 select Counter 0

If you set both SC1 and SC0 to 1 and STA to 0, the register selected

1 2 ... 142 143 144 145 146 147 148 149 150 151 152 ... 163 164

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Advantech PCI-1710HG Especificaciones Pagina 147