Rockwell-automation 1746-NR4 SLC 500 RTD/Resistance Input Module/ Inst Manual de usuario descargar pdf (Pagina 16)

16 SLC 500™ RTD/Resistance Input Module

Publication 1746-IN012B-EN-P - May 2001

Channel Configuration

Once the module is installed, each channel can be configured to establish the way

the channel will operate. You configure the channel by entering bit values into the

configuration word using your programming software. Channels 0 through 3 on the

NR4 are configured by entering bit values into output words 0 through 3

respectively. Output words 4 through 7 are used to further define the channel

configuration to allow you to choose a scaling format other than the module default

when using the proportional counts format. You can use words 4 and 5 to define

one user-set range. Use words 6 and 7 to define a second range. See the table

below for a bit-by-bit examination of the configuration word.

To Select

Make these bit settings

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Input Type

100Ω Pt 385 0000

200

Ω Pt 385 0001

500

Ω Pt 385 0010

1000

Ω Pt 385 0011

100

Ω Pt 3916 0100

200

Ω Pt 3916 0101

500

Ω Pt 3916 0110

1000

Ω Pt 3916 0111

Ω Cu 426

(1)

1000

120

Ω Ni 618

(2)

1001

120

Ω Ni 672 1010

604

Ω NiFe 518 1011

150

Ω 1100

500

Ω 1101

1000

Ω 1110

3000

Ω 1111

Data Format

Engineering Units 1

(3)

Engineering Units

(4)

Scaled-for-PID 10

Raw/Proportional 11

Broken Input

Set to Zero 00

Set to Upscale 01

Set to Downscale 10

Invalid 1 1

Temperature

Units

(5)

°C 0

°F 1

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24

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