LSIS XBF-PN04B, User Manual, Page: 55 / 820

Chapter 4 Positioning Parameter & Operation Data
4-10
External command selection and ex ternal command items are applied only when LS MECAPIONL 7N servo
drive is used. The servo drive’s DI#1 signal is used as external command. To use DI#1 as external command
signal, do not assign other functions to DI#1 in Defining Servo Parameter Input Signal (0x2200, 0x2201) item.
4.3.2 Extended parameter setting
(1) Software Upper/Lower Limit
(a) The function is designed so that the machine does not execute the positioning operation out of the range
by setting the range of machine available to move through software upper limit and software lower limit.
That is, this function is used to prevent any breakaway by incorrect operation position setting and
incorrect operation by user program fault.
(b) External input upper/lower limit can be also set besides the software upper/lower limit.
(c) The range check of software upper/lower limit shall be done at the start of operation and during
operating.
(d) If the software upper/lower limit is detected, error (Software upper limit error: 501, Software lower limit
error: 502) occurs and the pulse output of positioning module shall be disabled.
Therefore, when you want to operate again, it is required to reset error.
(e) Setting range
Unit Software upper/lower limit range
pulse -2147483648
∼ 2147483647[pulse]
㎜
-2147483648
∼ 2147483647[X10
-4
㎜
]
Inch -2147483648
∼ 2147483647[X10
-5
Inch]
degree -2147483648
∼ 2147483647[X10
-5
degree]
But Software upper limit value always should be higher than software lower limit, at least same.
(f) If the software upper/lower limit was set by default value (upper limit: 2,147,483,647, lower limit: -
2,147,483,648) or same value, then it wouldn’t detect upper/lower limit.