RS Automation NX-POSI1, Руководство пользователя

Страница: 63 / 196

63
Checking the Operation of the Near Home Switch and Home
Switch
Procedure:
1. Using forced operation of the home input and near home input, check to make
sure the operation display LEDs on the positioning unit light. At the same time,
using programming tools, monitor the X_6 and X_7 flag and check LEDs light.
2. Input the home return program, and actually carry out a home return to check if
near home input produces deceleration.
Points to check
The input valid logic for the home input and near home input is determined by
the control codes of the program.
3. Using repeated JOG operation and home return operation, check to make sure
the table stops properly at the home position, with no offset.
Points to check
There may be times when near home input, the home input position, and the
return speed cause offset from the home position.
4. If the table does not stop precisely at the home position, either change the
position of the near home input, or reduce the home return speed, so that the
table stops precisely at the home position.
If the CPU is switched from the RUN to the PROG. mode while the
positioning unit is in operation, the table decelerates and stops. For more
information about decelerating stop, refer to “Chapter 11”.
IMPORTANT