Rockwell-automation 1771-IL INSTL.INSTR.ISOL ANALOG INPUT Manual de usuario descargar pdf (Pagina 8)

Isolated Analog Input Module8

Publication 1771Ć5.51 - October 1996

Configure the module to conform to the application that you have

chosen. Use the configuration information below to configure your

module to your specifications.

Dec. Bits 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Description

Octal Bits 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Description

Word 1 8 7 6 5 4 3 2 1 Range Selection Ć Channels1-8

Input range selections allow the

Bit 01 Bit 00 Voltage or Current Input

user to configure the inputs for any of

7 input voltage or current ranges Two

0 0 1 to 5V DC, 4 to 20mA (default)

npu

age or curren

ranges.

ts a

equ

eac

0 1 0 to 5V DC, 0 to 20mA

bits are required for each channel

Bits 00 and 01 for channel 1, bits 02

d03f h l2 t

1 0 Ć5 to +5V DC, Ć20 to +20mA

and 03 for channel 2, etc.

1 1 Ć10 to +10V DC, 0 to 10V DC

2 Real Time Sampling

Data

Format

BTW

Format

Digital Filter

Real time sampling, data format, BTW

format, and digital filter

1.0s

900ms

800ms

700ms

600ms

500ms

400ms

300ms

200ms

No RTS

3.1s

100ms

1.5s

2.0s

2.5s

3.0s

000

00010

0 0010

00011

10 0

0101

0 0110

010

01111

10100

001

11110

1 1111

Digital filter reduces effect of noise on input. (Default is no filter.)

BTW format, determines format for scaling, digital filter

constant, and high and low alarms.

Bit08(10)=0Ćvalues must be entered in BCD (default)

Bit08(10)=1Ćvalues must be entered in Two's Complement Binary

Data format - set to match

your processor.

BCD (default)

Not Used

Two's complement binary

Signed magnitude binary

Bit

8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1

Sign bits, minimum, and maximum

Sign bits, maximum negative scaling values Sign bits, minimum negative scaling values

negative scaling values

4, 6, 8, 10, 12, 14,

16, 18

Minimum scaling values for each channel (word 4 to channel 1, word 6 to channel 2, etc.).

Enter in BCD format.

Channels1-8minimum scaling

5, 7, 9, 11, 13, 15,

17, 19

Maximum scaling values for each channel (word 5 to channel 1, word 7 to channel 2, etc.).

Enter in BCD format.

Channels1-8maximum scaling

8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1

Sign bits low and high alarm values

Sign bits, high alarm values Sign bits, low alarm values

Sign bits

low and high alarm values

21, 23, 25, 27, 29,

31, 33, 35

Low alarm values for each channel (word 21 to channel 1, word 23 to channel 2, etc.).

Enter in BCD format.

Channels1-8lowalarm

22, 24, 26, 28, 30,

32, 34, 36

High alarm values for each channel (word 22 to channel 1, word 24 to channel 2, etc.).

Enter in BCD format.

Channels1-8high alarm

37 Inhibit bits for calibration Not Used S G O Calibration bits

Offset Calibration Bit - (O) When this bit is

set, offset calibration is to be performed. When

set, no other calibration functions can be set.

Default = 0, no calibration.

Gain Calibration Bit - (G) When this bit is set, gain calibration is to be performed. When

set, no other calibration functions can be performed. Default = 0, no gain calibration.

Save Calibration Values - (S) When this bit is set, new calibration

values will be saved in EEPROM. Default = 0, values not saved.

Inhibit Channel Calibration Bits - (8-15) When this bit is set, that particular

channel will not be calibrated. Bit 8 to channel 1, bit 9 to channel 2, etc.

Default = 0, all channels to be calibrated.

For detailed configuration

information, see chapter 5 of your

    

 (publication 1771Ć6.5.91).

Configure the Module

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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