Rockwell-automation 1769-IF4XOF2 Compact 8-Bit Low Resolution Analog I Manual de usuario descargar pdf (Pagina 53)

Publication 1769-UM008A-EN-P - November 2001

1769-IF4XOF2 Module Data, Status, and Configuration Channels 4-9

The manipulation of the bits from this file is normally done with

programming software (e.g. RSLogix 500, RSLogix 5000, RSNetworx

for DeviceNet, etc.) during initial configuration of the system. In that

case, graphical screens are typically provided by the programmer to

simplify configuration. However, some systems, like the 1769-ADN

DeviceNet Adapter, also allow the bits to be altered as part of the

control program, using communication rungs. In that case, it may be

beneficial to understand the bit arrangement.

Bit Definitions for Configuration Data

Sign Bit (SGN)

The sign bit is always positive (Bit 15 = zero).

Enable/Disable Input Channel (EIx)

Word 0 bits 4 to 7 (EI0 to EI3) are defined as the input channel

enable/disable bits. These bits allow individual input channels 0

through 3 to be enabled (on) or disabled (off). When a channel is not

enabled, the module provides no current or voltage input to the host

controller.

Table 4.6 Configuration Data File

Word

Bit Position

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

Not Used

(1)

(1) Any attempt to write a non-valid (1’s) bit configurations into any not used selection field results in a module configuration er ror.

EI3 EI2 EI1 EI0

FM0

(2)

(2) Not all controllers support these functions. Refer to your controller’s user manual for details.

PM0

(2)

Not

Used

(1)

PFE0

(2)

Not Used

(1)

EO1 EO0

FM1

(2)

PM1

(2)

Not

Used

(1)

PFE1

(2)

2SGN

Channel 0 Fault Value

(2)

0000000

3SGN

Channel 0 Program (Idle) Value

(2)

0000000

4SGN

Channel 1 Fault Value

(2)

0000000

5SGN

Channel 1 Program (Idle) Value

(2)

0000000

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 103 104

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