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Meaning of fine resolution in Axis configuration

Created by: PLCforEver at: 9/26/2008 9:17 PM (2 Replies)

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9/26/2008 9:17 PM	Rate (0)
PLCforEver Posts: 99 Rating: (3)	Hello, I am adding an IM174 in hardware config. For encoder parameters, they ask for "reserved bits for fine resolution". What it is for? If I have a TTL encoder with 2000 pulses per revolution, can I say: Resolution: 2000 Reserved bits for fine resolution:2 (to take care of quadrature?) or should I put: Resolution:8000 Reserved bits for fine resolution:11(for who love big numbers!) I have dificulties to get the point here... Best Regards
PLCforEver Posts: 99 Rating: (3)
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9/26/2008 9:34 PM	Rate (0)
DeepakD Bronze Member Joined: 11/30/2006 Last visit: 6/7/2024 Posts: 118 Rating: (11)	PLCforEver Hello, I am adding an IM174 in hardware config. For encoder parameters, they ask for "reserved bits for fine resolution". What it is for? If I have a TTL encoder with 2000 pulses per revolution, can I say: Resolution: 2000 Reserved bits for fine resolution:2 (to take care of quadrature?) or should I put: Resolution:8000 Reserved bits for fine resolution:11(for who love big numbers!) I have dificulties to get the point here... Best Regards Hi The "Reserved bits for fine resolution" parameter specifies the desired pulse multiplication of the encoder increments transmitted in actual encoder values. You can set the fine Resolution between 0- 15. Minimum fine resolution for TTL encoders A minimum fine resolution of 22 (= 4) must always be taken into account and set for TTL encoders. You need to calculate this based on encoder Parameters. The Formula is given in the manual. For more details please download the Manual from http://support.automation.siemens.com/WW/view/en/23910075

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9/26/2008 10:18 PM	Rate (0)
PLCforEver Posts: 99 Rating: (3)	I can read the manual but understanding the philosophy behind it... So I will take it only as a multiplier in order of 2
PLCforEver Posts: 99 Rating: (3)
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