Rockwell-automation 1771-IR Series D RTD Input Module User Manual Manuel d'utilisateur télécharger pdf (Page 33)

4–5Configuring Your RTD Module

Publication 1771Ć6.5.129 - March 2000

Word DescriptionBits

Word 1 Cont. Ohms 1 0

Not used 1 1

bit 08 (10) In temperature mode:

0 = Entire module is platinum

1 = Entire module is 10 ohm copper. Enter exact value in word 2.

In ohms mode:

0 = 30mohm/count resolution

1 = 10mohm/count resolution

bits 09-10

(11-12)

Data format bits tell module which format to use for reporting input

values to processsor

Format Bits 12 11

4-digit BCD 0 0

2's complement binary 0 1

Signed magnitude (binary) 1 0

Not used 1 1

bits 11-15

(13-17)

Real time sample bits. See NO TAG.

Sample Time 17 16 15 14 13

0.1ms 0 0 0 0 1

0.5ms 0 0 1 0 1

0.6ms 0 0 1 1 0

0.7ms 0 0 1 1 1

0.8ms 0 1 0 0 0

0.9ms 0 1 0 0 1

1.0s 0 1 0 1 0

1.5s 0 1 1 1 1

2.0s 1 0 1 0 0

2.5s 1 1 0 0 1

3.0s 1 1 1 1 0

Word 2 If bit 10 is set in word 1, and temperature readings are desired, word

2 must also be used. Enter the exact resistance of 10 ohm RTD at

C in BCD. Range is 9.00 to 11.00 ohms. Values less than 9.00

ohms or greater than 11.00 ohms will default to 10.00 ohms.

Non-BCD values will also default to 10.00 ohms.

Words 3-8 Individual channel bias words entered in BCD. This value is

subtracted from the channel data in the BTR. The bias value is

always a positive number. Bias value range is 0<

bias<9999.

Words 9-14 Individual channel calibration words.

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 78 79

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Rockwell-automation 1771-IR Series D RTD Input Module User Manual Manuel d'utilisateur Page 33

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