Mitsubishi FX1S Series

FX Series Programmable Controlers Applied Instructions 5
5-73
Points to note:
a) It is recommended that the drive input used for the high speed counter functions; HSCS,
HSCR, HSCZ is the special auxiliary RUN contact M8000.
b) If more than one high speed counter function is used for a single counter the selected flag
devices (D) should be kept within 1 group of 8 devices, i.e. Y0-7, M10-17.
c) All high speed counter functions use an interrupt process, hence, all destination devices (D)
are updated immediately.
Use of interrupt pointers
FX
2N and FX2NC MPUs can use interrupt pointers I010 through I060 (6 points) as destination
devices (D). This enables interrupt routines to be triggered directly when the value of the
specified high speed counter reaches the value in the HSCS instruction.
Note:
For all units Max. 6 simultaneously active HSCS/R and HSZ instructions. Please remember
that the use of high speed counter functions has a direct impact on the maximum allowable
counting speed! See page 4-22 for further details.
FX 1S
FX 1N FX 2N
FX 2NC