Important – Rockwell Automation 1746-HSCE,D17466.5 High-Speed Counter Module User Manual

Page 40

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Publication 1746-UM006B-EN-P - August 2005

2-22 Module Operation

The Initial Output (M0:e.3/8-15) is applied to the Physical and Soft
Outputs only when the sequencer is initialized. Initialization occurs
when the Function Control bit (M0:e.1/12) is toggled from 0 to 1, or
when a pulse counter reset occurs and the Sequencer Reset bit
(M0:e.1/0) is set to 1.

Initial Output, Step Outputs, Valid Steps, and Step Presets

IMPORTANT

Although the Valid Steps can be dynamically
changed by adding or removing steps while the
Function Control bit (M0:e.1/12) is set to 1
(sequencer is running), it should only be done by
experienced programmers. The disabling or enabling
of steps above the current step while the Function
Control bit (M0:e.1/12) is set may not take effect
until the next pass through the sequence. To assure
the proper sequence, a step should not be enabled
or disabled while the Function Control bit
(M0:e.1/12) is set to 1.

Step 2 and 1 Outputs, Word 4

Bit Number (decimal)

15 14 13 12 11 10 9

8

7

6

5

4

3

2

1

0

M0:e.3
M0:e.4

Valid Steps 1–16, Word 2

M0:e.2

Initial Outputs, Valid Steps 17–24, Word 3

M0:e.15

Step 24 and 23 Outputs, Word 15

Valid Steps

Initial Outputs

Physical Output patterns

Soft Output patterns

M0:e.17

Step 1 Preset

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