beautypg.com

Bit/worddefinitions for block transfer readwords – Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual User Manual

Page 75

background image

2–55

How Communication Takes Place and I/O Image Table Mapping

Publication 1794ĆUM057B-EN-P - November 2001

Incremental Encoder Module (1794ĆID2) Image Table Mapping

Module Image

I/O Image

Input Size

Output Size

0 to 7 Word s

1 to 8 Word s

G0 Z0

B0 A0

S1 S0 C1 C0

R

Z1

G1

A1

B1

PD0

PD1

Store 0 - SavedCounter Value on channel 0

Store 1 - SavedCounter Value on channel 1

Channel 0 - current counter value on channel 0

Channel 1 - current counter value on channel 1

Channel 0 - Counter wordreadback
Channel 1 - Counter wordreadback

Code for identification of software version

Channel 0 Control Word- sets the function of counter 0

Channel 1 Control Word- sets the function of counter 1

Channel 0 Preset - value to loador compare with counter 0

Channel 1 Preset - value to loador compare with counter 1

Not used

Not used

Control Word2 - Sets filter function for both channels

Bit/WordDefinitions for Block Transfer ReadWords

for the

Pulse Counter Module

Word

Bit

Definition

Read

Word1

Bit 00

Status for input A (pulse transmitter 0) - This bit, when set, indicates a signal at A.

Word1

Bit 01

Status for input B (pulse transmitter 0) - This bit, when set, indicates a signal at B.

Bit 02

Status for input Z (pulse transmitter 0) - This bit, when set, indicates a signal at Z.

Bit 03

Status for input G (pulse transmitter 0) -This bit, when set, indicates a signal at G.

Bit 04

Status for input A (pulse transmitter 1) - This bit, when set, indicates a signal at A.

Bit 05

Status for input B (pulse transmitter 1) - This bit, when set, indicates a signal at B.

Bit 06

Status for input Z (pulse transmitter 1) - This bit, when set, indicates a signal at Z.