Rockwell Automation 1746-HSCE,D17466.5 High-Speed Counter Module - Manual (Page 94)

Publication 1746-UM006B-EN-P - August 2005
4-34 Configuration and Programming
M0:e.16 Bits 0 through 16 - Rate Period
The integer value in this word indicates the Rate Period time. The
value can range from 1-255. This value is multiplied by 10 ms to
obtain the actual Rate Period time. For more information, refer to
Selecting the Rate Period Parameter in Chapter 2.
M0:e.16 Bits 8 through 15
Bits 8 through 15 are reserved and must be reset to 0.
M0:e.17 through M0:e.40 Step 1 through 24 Presets (Dynamic)
The Sequencer Mode supports 24 steps. Each step has an associated
Step Preset. Values are entered into the Step Preset words. The Step
1-24 Preset values define the number of pulses required to reach the
corresponding step (the step is reached at one count beyond the
preset). This value refers to the Accumulated Count value, not the
relative number of pulses received between steps. When a step is
reached, the Step Outputs are applied to the output terminals and
Output Status field (I:e.4/8-15).
For example, when the Step 2 Preset count (M0:e.18) is reached, the
Step 2 Outputs pattern in M0:e.4 takes effect. If you want the output
pattern contained in Step 2 Outputs to take effect at count 10000 (and
the counter is counting up) - you must set Step 2 Preset to 9999
(because the output pattern becomes valid on the next count after the
preset count is reached). The output pattern remains in effect until the
next step preset is passed.
IMPORTANT
The output pattern contained in the Step Output
words (M0:e.4-15) takes effect on the next count
after the Step Preset Value (M0:e.17-40) matches the
Accumulated Count.
Step 1 Preset, Word 17 M0:e.17
Step 2 Preset, Word 18 M0:e.18
Step 23 Preset, Word 39 M0:e.39
Step 24 Preset, Word 40 M0:e.40
Bit Number (decimal) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0