Rockwell-automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Modu Manual de usuario descargar pdf (Pagina 38)

Module Configuration

Chapter 4

4-9

Bit/Word Descriptions for the Analog Input Module Block Transfer

Write Configuration Block

Note that decimal bits are shown, with octal bits in parentheses.

Word

Decimal

Bit

(Octal Bit)

Description

Word 1 and 2

Bits 0015

(0017)

Input range selections allow the user to configure the inputs for any of 7 input

voltage or current ranges. Two bits are required for each channel. See Table 4.A.

Word 3

Bits 0007

(0007)

Digital filter reduces effect of noise on input. See "Digital Filtering" on page 44.

Bit 08

(10)

Input type, set bit for differential mode on all channels.

Reset (0) = singleended. Refer to Table 4.C

Bits 0910

(0710)

Data format matches format of processor. See Table 4.D.

Bits 1115

(1317)

Real time sampling will default to 12.5ms for differential mode and 25ms for

singleended, greater with filtering selected. See appendix A for timing details.

See Table 4.E for other real time intervals.

Word 4

Bits 0015

(0017)

Minimum sign bits, when set, designate negative minimum scaling values for the

corresponding input channels. Bit 00 corresponds to channel 1, bit 01

corresponds to channel 2, etc.

Word 5

Bits 0015

(0017)

Maximum sign bits, when set, designate maximum scaling values that are

negative. Maximum scaling value must be greater than minimum on any

particular channel. Bit 00 corresponds to channel 1, bit 01 corresponds to

channel 2, etc.

Words 637

Bits 0015

(0017)

Minimum and maximum scaling values for each channel. Enter in BCD format.

In this chapter you learned how to configure your module’s features,

condition your inputs and enter your data.

Chapter Summary

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