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MELSEC-Q
3 SPECIFICATIONS
3.5.28 Upper/lower setting limiter
(buffer memory address 55, 56, 87, 88: Un\G55, Un\G56, Un\G87, Un\G88)
(1) Sets the upper and lower limits of the set value (SV).
(2) Set a value within the input range specified for the input range.
Make setting so that the (lower output limiter value) is less than the (upper output
limiter value).
Input range upper limi
Lower limit value Upper limit value
Input range lower limit
SV setting range
(3) When the setting value is wrong, a write error occurs, the error flag (Xn2) turns
on, and then the error code is stored in the error code (buffer memory address:
0).
Error code Description
4 A value out of the setting range is set.
5
The setting value is within (lower setting limiter value)
(upper setting limiter
value).
3.5.29 Program control RUN/RESET (buffer memory address 57, 89: Un\G57, Un\G89)
(1) Sets the program control to RUN or RESET.
• Reset : sets 0.
The program control is stopped. The measured value judgment is
only executed when control stops and the output is turned OFF
when the pattern end output is executed.
• RUN : sets 1.
The program control is executed.
(2) When a mode other than the program control mode is switched to the program
control mode at "RUN" status, the program control starts immediately after
switching the control mode.
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