Rockwell-automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual Manual de usuario Pagina 76

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Publication 1794-UM064B-EN-P - May 2014
64 Communicate With Your Module
Word
Write
1 Control Word 0 – selects the measure function.
2 Control Word 1 – sets the clock frequency and period multiple.
3 Control Word 2 – sets the start of a new measurement.
4…5 Reserved.
Where: M = Positive edge measurement ready for the respective channel.
RD = Reset Done for respective channel.
1794-IP4 Pulse Counter Module Word/Bit Definitions
Word Bit Definition
Read Word 0 Bit 00…15
(00…17)
Store Counter 00 – 16-bit period measurement or low word of 32-bit period measurement for channel 0.
Read Word 1 Bit 00…15
(00…17)
Ch 0 Data 0 – pulse counter or high word of 32-bit period measurement for channel 0.
Read Word 2 Bit 00…15
(00…17)
Ch 0 Data 1 – 16-bit period measurement or low word of 32-bit period measurement for channel 1.
Read Word 3 Bit 00…15
(00…17)
Ch 1 Data 1 – pulse counter or high word of 32-bit period measurement for channel 1.
Read Word 4 Bit 00…15
(00…17)
Ch 2 Data 0 – 16-bit period measurement or low word of 32-bit period measurement for channel 2.
Read Word 5 Bit 00…15
(00…17)
Ch 2 Data 1 – pulse counter or high word of 32-bit period measurement for channel 2.
Read Word 6 Bit 00…15
(00…17)
Ch 3 Data 0 – 16-bit period measurement or low word of 32-bit period measurement for channel 3.
Read Word 7 Bit 00…15
(00…17)
Ch 3 Data 1 – pulse counter or high word of 32-bit period measurement for channel 3.
Read Word 8 Bit Status
Bit 00 Ch 0 Ready – measurement ready.
Bit 01 Ch 1 Ready – measurement ready.
Bit 02 Ch 2 Ready – measurement ready.
Bit 03 Ch 3 Ready – measurement ready.
Bit 04 Reset Done, Ch 0 – positive edge on this bit indicates counter 01 reset done.
Bit 05 Reset Done, Ch 1 – positive edge on this bit indicates counter 11 reset done.
Bit 06 Reset Done, Ch 2 – positive edge on this bit indicates counter 21 reset done.
Bit 07 Reset Done, Ch 3 – positive edge on this bit indicates counter 31 reset done.
Bit 08…15 Reserved for factory use.
Read Word 9
Bits 00…15
(00…17)
Software revision – Version code of software installed.
1794-IP4 Pulse Counter Module Block Transfer Word Assignments
(Octal Bit ⇒ ) 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Dec. Bit
15 14 13 12 11 10 03 08 07 06 05 04 03 02 01 00
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