Elumatec SBZ 130/01 retrofit
- tommylight
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No idea what pins you are looking for, but there are no 7i74 pins in the hal files, only functions like serial encoders or smart serial.
Edit
If you are looking for wiring pins, see the 7i74 manual, RX and TX pins and their inverted pins, keep in mind in most cases the TX from encoder goes to RX on Mesa 7i74, and so on.
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I have a magnetic linear encoder with 1 micron resolution (native 2mm pole distance with interpolation resulting in 1um resolution). My ball screw pitch is 5mm per revolution, so should my encoder raw count be 5000 pulses per revolution and the encoder scale 5000. The encoder spits some large number which seem to work in increments when I move the readhead but the readings are non sense large number like 254921 or similarly large number.
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With a scale of 5000, does the position (not the count) change by
1.000 for each mm of motion?
Other possible issues for add position numbers are wrong BISS setup parameters
or clock/data polarity issues.
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Yes. For small distances, the readings increase by correct amount. In my case starting point X axis changes from -2366.005 -2365.008 moving 1mm.does the position (not the count) change by
1.000 for each mm of motion?
When I swap tx+ and tx- the data output is same. swapping rx+ and rx- results in the digital read out showing a constant number.
biss_chan_0=xencoder%26ge
setp hm2_5i25.0.dpll.01.timer-us -200
setp hm2_5i25.0.stepgen.timer-number 1
setp hm2_5i25.0.biss.00.timer-number 1
setp hm2_5i25.0.biss.00.frequency-khz 2000
setp hm2_5i25.0.biss.00.xencoder.scale 5000
#setp hm2_5i25.0.biss.00.xencoder.counts-per-rev 130000
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26 bits sounds a bit odd since that's 67 meters in microns...
( There may be some status bits included in the 26 bits that
need to be reflected in the format string )
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How does 26 bits translate to 67 meters?26 bits sounds a bit odd since that's 67 meters in microns...
The scale is not mounted on to the machine but its on the table and everytime the number shown in axis is different. Sometimes it is -20901 to -20768 and completely different number when placed again.What are the readings at the far ends of the scale?
( There may be some status bits included in the 26 bits that
need to be reflected in the format string )
My encoder is 2D0. I tried biss_chan_0=xencoder%24ge after seeing first couple of bits are zero from the table I've attached but the readout in axis changes very minute decimal places while traversing the whole length of the scale with 24ge string.
Attachments:
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if there are 0 bits in the data, they must be accounted for in the format string.
That is, if you still have 26 bits total, the format string must have 26 bits, not 24
some of them being dummy (using the "pad" format string entry) bits and not
part of the position part of the data
Do you have a link to the encoder manual?
Are you sure its Gray coded?
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RLS LA11:
"biss_chan_0=null%1bcrc%6fwarning%1berror%1bencoder%26e" I saw this in a forum post where a person posted he was using similar renishaw glass scale. Where is the information about the format string? man page for hm2 doesn't go into this much details. Also the string I mentioned above doesn't work for me, but the person in the forum said it his scale is working.
Attachments:
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you need 24 bits of (non Gray code) position, 2 pad bits, 1 error and 1 warning bit
and 6 CRC bits
The hostmot2 manual page describes the format string components in the SSI section
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