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Submitted by glenn crowder on Thu, 07/05/2007 - 17:55

Comments 5

glenn crowder on 07/06/2007 - 10:13

glenn crowder on 07/06/2007 - 20:42

cqhoward on 12/13/2015 - 22:09

Hi, following from this, the Arm Latch function AL has a command AL SA to latch the auxiliary encoder, but the pin inputs on a DMC-4030 for an encoder channel do not include an I index pulse for an auxiliary encoder, only for the main encoder. The manual also says that the auxiliary encoder on has 2 inputs for A and B signals, not for the Index pulse, so that is consistent. It was unclear how the AL SA command (for the auxiliary encoder) is meant latch when there isn't an index pulse that can be connected to the controller. I take it from this previous post that the preferred method is to use this II command, or alternatively use another "spare" main encoder input (providing one is available). Is that right?
Cheers Carl

KushalP on 01/26/2017 - 10:04

Hi Carl,

The DMC-40x0 has dedicated Digital Inputs that are assigned to each axis for latch functionality. Since you have a 3 axis controller, Digital Input 1 would be your Latch input for Axis A, Digital Input 2 would be the Latch input for Axis B, and Digital Input 3 would be the Latch input for Axis C. So when you specify AL SA, the controller will report the Aux. encoder position based on Axis A's Latch Input, which would be Digital Input 1. If you specify AL A the controller will report the main encoder position based on the Latch Input , Digital Input 1. If you specify AL TA, then the controller will report the main encoder position based on the index signal for that axis.