Rockwell-automation 1746-HSCE2 Multi-Channel High Speed Counter Module Manual de usuario Pagina 36

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Publication 1746-UM002B-EN-P - August 2004
2-16 Module Operation
Class 4 Operation
In Class 4 operation, the counter data consist of a maximum of 23
words.
Figure 2.13 Class 4 Data Format
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word 0
ACK
MFLT
PERR
DEBUG
FB1
0
OP
MODE
Output State
Transferred in all Modes
(2)
Virtual Real
Word 1 Counter 2 Status Counter 1 Status
Word 2 Upper 4 digits: Counter 1 Count Value
Word 3 Lower 3 digits: Counter 1 Count Value
Word 4
Counter 1 Rate Value
(1)
(1) The format of the Rate Values is programmed with the Rate Value Format bit in the Module Setup programming
block. This bit specifies the rate value to be in integer or floating-point format. The default is integer format.
Count values are always transferred in integer format. See Data Format on page 4-3.
Word 5
Word 6 Upper 4 digits: Counter 1 Capture Value
Word 7 Lower 3 digits: Counter 1 Capture Value
Word 8 Upper 4 digits: Counter 2 Count Value
Word 9 Lower 3 digits: Counter 2 Count Value
Word 10
Counter 2 Rate Value
(1)
Word 11
Word 12 Upper 4 digits: Counter 2 Capture Value
Word 13 Lower 3 digits: Counter 2 Capture Value
Word 14 Counter 4 Status Counter 3 Status
Transferred in Modes 2 and 3
(2)
Word 15 Upper 4 digits: Counter 3 Count Value
Word 16 Lower 3 digits: Counter 3 Count Value
Word 17
Counter 3 Rate Value
(1)
Word 18
Word 19 Upper 4 digits: Counter 4 Count Value
Transferred in Mode 3
(2)
(2) Data values transferred. Regardless of operating mode, the module will transfer up to 23 words. Words that do
not contain relevant data are set to 0000H.
Word 20 Lower 3 digits: Counter 4 Count Value
Word 21
Counter 4 Rate Value
(1)
Word 22
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