Points Of Technique 10; Advanced Programming Points - Mitsubishi FX1S Series Programming Manual

FX Series Programmable Controllers
10. Points Of Technique
10.1

Advanced Programming Points

The FX family of programmable controllers has a very easy to learn, easy to use instruction set
which enables simple programs to perform complex functions. This chapter will point out one
or two useful techniques while also providing the user with valuable reference programs.
If some of these techniques are applied to user programs the user must ensure that they will
perform the task or operation that they require. Mitsubishi Electric can take no responsibility for
user programs containing any of the examples within this manual.
Each program will include a brief explanation of the system. Please note that the method of
'how to program' and 'what parameters are available' for each instruction will not be discussed.
For this information please see the relevant, previous chapters.
10.2 Users of DC Powered FX
When using DC powered FX
instructions to the beginning of the installed program:
Explanation:
With AC powered FX
adjusted by writing the desired detection period to the special data register D8008.
However, in the case of DC powered units this detection period must be set to 5 msec.
This is achieved by moving the value of -5 into D8008. Failure to do this could result in inputs
being missed during the DC power 'drop'.
Units
2N
programmable controllers, it is necessary to add the following
2N
M8000
Step 0
MOV
programmable controllers, the power break detection period can be
2N
FX
1S
FX
1S
K 5 D8008

Points Of Technique 10

FX FX FX
1N 2N 2NC
FX FX FX
1N 2N 2NC
10-1