Input type temperature scale – Rockwell Automation 1771-IXE/D Thermocouple/Millivolt Input Module User Manual User Manual

Page 30

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4–2

Module Configuration

Publication 1771Ć6.5.130 Ć May 1999

The thermocouple/millivolt input module accepts the following types
of inputs:

Table 4.A

Types of Inputs

Input Type

Input Type

Temperature

Range

o

C

Bits

00

01

02

Bits

03

04

05

Millivolt

Millivolt

-100 to +100

0

0

0

0

0

0

Thermocouple

E

-270 to 1000

1

0

0

1

0

0

J

-210 to 1200

0

1

0

0

1

0

K

-270 to 1380

1

1

0

1

1

0

T

-270 to 400

0

0

1

0

0

1

R

-50 to 1770

1

0

1

1

0

1

S

-50 to 1770

0

1

1

0

1

1

1

1

1

1

1

1

The input type is selected by setting bits in the block transfer write
(BTW) file. Two different inputs can be selected. You can have 4
inputs set for one type, and 4 inputs set for another type; or you can
have all inputs the same. If you select different types of inputs, set bit
06 to 1. If you do not select 2 different input types, the module
defaults to all inputs set to those selected by bits 00 –02.

Set these bits

for input type.

Set this bit for 2 different

input types (see table 5.D)

Word

17

16

15

14

13

12

11

10

07

06

05

04

03

02

01

00

1

SampleTime

Format

T

0

E

Input Type

Input Type

The temperature scale reported by the module is selected by setting
bit 10 in the configuration word. When bit 10 is set (1), the
temperature is reported in degrees Fahrenheit. When reset (0), the
temperature is reported in degrees Celsius.

The temperature bit 10 is ignored when the millivolt input type is
selected.

Input Type

Temperature Scale

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