Measurement-computing PPIO-AI08 Bedienungsanleitung PDF herunterladen (Seite 12)

5.3 PPIO-AI08 REGISTERS

The PPIO-AI08 register descriptions follow the format:

CH1CH2CH4CH8A/D12

LSB

A/D11A/D10A/D9

01234567

Where the numbers along the top row are the bit positions within the 8-bit byte and

the numbers and symbols in the bottom row are the functions associated with that bit.

To write to or read from a register in decimal or

HEX, the following weights apply:

801287

40646

20325

10164

883

442

221

110

HEX VALUEDECIMAL VALUEBIT POSITION

To write control or data to a register, the individual bits must be set to “0” or “1”, then

combined to form a byte.

The registers and their function are listed on the following table. Each register has

eight bits which can constitute a byte of data or eight individual set/read functions.

OP1 - OP4,

INTE & MUX

Address

EOC, IP1-IP3, IRQ, MUX

Address

BASE + 2

Start 8 bit A/D conversionA/D Bits 9-12(LSB)

BASE + 1

Start 12 bit A/D conversion

A/D Bits 1(MSB) −8

BASE + 0

WRITE FUNCTIONREAD FUNCTIONADDRESS

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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Measurement-computing PPIO-AI08 Bedienungsanleitung Seite 12