adccommunitymod (AutomationDirect) asked a question.
CTRIO H2 for use with quad encoder
Created Date: June 18,2010
Created By: eric14779
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I am spec-ing out a linear encoder for use with a CTRIO H2 counter I know what mechanical resolution I want. but I am confused as to what the minimum edge separation can be to work with the CTRIO H2 counter The output of the encoder is Quadrature in a range of 0.12 microsecond to 24.0 microsecond edge separation the encoder is a Balluff BML-S1B0-Q53F-M400 and insight would be appreciated
Created Date: June 18,2010
Created by: Rich19551
Minimum Pulse Width 5 ?sec
1 Millisecond = 1000 Micro seconds
Created Date: June 19,2010
Created by: eric14779
Thanks for the reply Rich19551
would the CTRIO H2 handle a 5 ?sec pulse on each input or would I have to multipy by 4 to not have too high of a freq.
in other words what is the fastest quadrature signal the H2 can handle ???
Created Date: June 19,2010
Created by: Rich19551
2 quadrature encoder counters up to 100kHz, or 1us
The H2 is desined to run independent of the CPU to drive it's own I/O but if you are trying to use the information in the CPU you are limited to scan time.
Be carefull of what you are trying to do.
Rich
Created Date: June 21,2010
Created by: eric14779
Rich,
I am designing a system simular to a DRO with the ability to calculate a "distance to position " read out on a C-More display panel.
this device will be hand cranked like a manual lathe into position. As the operator gets close he will move the slide slower so my thinking was that the scan time issue will not be a factor.
The PLC will not have any other "duties " other than calculating the math for the recipie part selected, 1 output inhibit when the slide is between two positions, and calculating the value to display.
so I think the scan time will be very short....
Created Date: June 18,2010
Created by: eric14779
I am spec-ing out a linear encoder for use with a CTRIO H2 counter I know what mechanical resolution I want.
but I am confused as to what the minimum edge separation can be to work with the CTRIO H2 counter
The output of the encoder is Quadrature in a range of 0.12 microsecond to 24.0 microsecond edge separation
the encoder is a Balluff BML-S1B0-Q53F-M400
and insight would be appreciated