Homing procedure for vertical focusing motors: Difference between revisions
(New page: Back to X-Ray Microscopy This procedure describes the homing of the motors vzm, vyu, vyd.<br/> At the beginning make sure that not 2 MLLs are mounted in order to avoid collisions dur...) |
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1) Switch the controller PI C-848 off.<br/> | 1) Switch the controller PI C-848 off.<br/> | ||
2) Move vuy and vud by hand to upper hard limit.<br/> | 2) Move vuy and vud by hand to the upper hard limit.<br/> | ||
3) Switch the controller PI C-848 on.<br/> | 3) Switch the controller PI C-848 on.<br/> | ||
4) Execute ''initPIC848'' in a terminal. This initializes the motors.<br/> | 4) Execute ''initPIC848'' in a terminal. This initializes the motors.<br/> | ||
Revision as of 18:53, June 10, 2009
Back to X-Ray Microscopy
This procedure describes the homing of the motors vzm, vyu, vyd.
At the beginning make sure that not 2 MLLs are mounted in order to avoid collisions during the homing procedure.
1) Switch the controller PI C-848 off.
2) Move vuy and vud by hand to the upper hard limit.
3) Switch the controller PI C-848 on.
4) Execute initPIC848 in a terminal. This initializes the motors.
5) Press HomR in the MEDM screen of vyu. This will home the motor. During homing the MEDM screen shows the message Comm. Failure". This can be cleared by pressing STATUS. After finding the home position of vyu the User/Dial Readback values are -20,700.0138 and Raw 3000002.
6) Move vyu down to User/Dial=-10,000. This is important to avoid the flexural pivot's elastic limit from getting exceeded during homing of the vyd motor.
7) Press HomR in the MEDM screen of vyd. The motor will be homed with the final position User/Dial=-20,700.0138 and Raw=3000002.
8) Finally, home vzm by pressing HomR in the MEDM screen. The home position of vzm is User/Dial=-81,600.0085 and Raw=9600001.