Delta 36-R31 User Manual download pdf (Page 31)

ACC-36E Manual

USing acc-36E with power umac 31

Manual ADC Read Using ACC-36E Structures

Power PMAC supports the following structures for manually reading ACC-36E:

Structure

Description

ACC36E[n].ConvertCode

ADC pair and convert code select

ACC36E[n].ADCRdyLow

Ready-to-read bit for ADC#1 through #8

ACC36E[n].ADCRdyHigh

Ready-to-read bit for ADC#9 through #16

ACC36E[n].ADCuLow

Read ADC#1 through #8 as unipolar

ACC36E[n].ADCuHigh

Read ADC#9 through #16 as unipolar

ACC36E[n].ADCsLow

Read ADC#1 through #8 as bipolar

ACC36E[n].ADCsHigh

Read ADC#9 through #16 as bipolar

ACC36E[n].ADCHighLow

Read ADC pair as one word

Note

n is the index specified by the DIP switch SW1 setting of the

ACC-36E.

Setting up the manual ADC read with Power PMAC requires two simple steps:

1. Configure ACC36E[n].ConvertCode = (ADC Pair #) – 1 for Unipolar Inputs

= (ADC Pair #) + 7 for Bipolar Inputs

ADC Pair #

ADC#

Channel Select Pointer Value

Unipolar Inputs

Bipolar Inputs

1 & 9

2 & 10

3 & 11

4 & 12

5 & 13

6 & 14

7 & 15

8 & 16

2. Read/copy ADC data results as soon as the ADC Ready Bits are “ready” (that is, their

values become 1). This can be achieved easily in a Power PMAC script PLC, and

implemented for all channels to be read consecutively and consistently, creating a

“custom automatic” ADC read function.

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Delta 36-R31 User Manual Page 31

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