Selecting data format (bits 12…14) – Rockwell Automation 1769-IR6 Compact I/O 1769-IR6 RTD/Resistance Input Module User Manual

Page 54

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Rockwell Automation Publication 1769-UM005B-EN-P - March 2012

Chapter 4 Module Data, Status, and Channel Configuration

Selecting Data Format (Bits 12…14)

Bits 12…14 of the channel configuration word are used to indicate the input
data format. You may choose any of the following formats:

·

raw/proportional

·

engineering units x 1

·

engineering units x 10

·

scaled for PID

·

percent of full scale

TIP

The engineering units data formats represent real
temperature or resistance engineering units provided by the
module. The raw/proportional counts, scaled-for-PID, and
percent of full scale data formats The raw/proportional
counts, scaled-for-PID and percent of full-scale data
formats may yield the highest effective resolutions, but may
also require that you convert channel data to real
engineering units in your control program.

Table 8 - Data Formats for RTD Temperature Ranges for 0.5 and 1.0 mA Excitation Current

RTD Input Type

Data Format

Engineering Units x1

Engineering Units x10

Scaled-for-PID

Proportional

Counts

0.1 °C

0.1 °F

1.0 °C

1.0 °F

100

Ω Platinum 385

-2000…8500

-3280…15620

-200…850

-328…1562

0…16383

-32768…32767

200

Ω Platinum 385

-2000…8500

-3280…15620

-200…850

-328…1562

0…16383

-32768…32767

500

Ω Platinum 385

-2000…8500

-3280…15620

-200…850

-328…1562

0…16383

-32768…32767

1000

Ω Platinum 385

-2000…8500

-3280…15620

-200…850

-328…1562

0…16383

-32768…32767

100

Ω Platinum 3916

-2000…6300

-3280…11660

-200…630

-328…1166

0…16383

-32768…32767

200

Ω Platinum 3916

-2000…6300

-3280…11660

-200…630

-328…1166

0…16383

-32768…32767

500

Ω Platinum 3916

-2000…6300

-3280…11660

-200…630

-328…1166

0…16383

-32768…32767

1000

Ω Platinum 3916 -2000…6300

-3280…11660

-200…630

-328…1166

0…16383

-32768…32767

10

Ω Copper 426

-1000…2600

-1480…5000

100…260

-148…500

0…16383

-32768…32767

120

Ω Nickel 618

-1000…2600

-1480…5000

-100…260

-148…500

0…16383

-32768…32767

120

Ω Nickel 672

-800…2600

-1120…5000

-80…260

-112…500

0…16383

-32768…32767

60

Ω Nickel Iron 518

-1000…2000

-3280…1560

-100…200

-328…156

0…16383

-32768…32767

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