Hello everyone. I have an old Fanuc s-12 with an RJ controller. The robot is for laser cutting, and has a trepan head as group 2 (J7 & J8). It was without power for 2 weeks, and the batteries were dead, so it lost its master. I brought it up, drove it to the zero marks, and did a zero position master, and calibrate on group 1, then on group 2, and did a cold start. Group 1 took the master without problems, but group 2 is still a mile off. Could there be something that I'm missing, or maybe something I should be looking for? Thanks in advance.
group 2 remaster
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memiller1 -
April 9, 2018 at 5:44 PM -
Thread is marked as Resolved.
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Good morning,
I have had this problem before and heard about this with other acquaintances. But the causes vary a lot so I could not give you the exact solution to what is happening to you.
I could give you some things that I check or did in the past and worked or others told me what worked for them.
check the batteries
check DMR_GRP Master done variable
take it to mark mastered, move it just a little (too little) and return it to mastered only for validate
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Thanks for the input. I should've added that I replaced the 4 D-cell batteries in the base before remastering. I checked the DMR_GRP variable, and it was true.
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Might be stating the obvious here, but did you calibrate after you were done on group 2?
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Yes, I've calibrated after the master. It's the weirdest thing. Axis 7 (G2:A1) is trying to go to a position near 78 degrees, but there's a total of around 33 degrees of movement in the axis. With zero position in the center, it can only move around 16 degrees either direction.