Mitsubishi 00JCPU User Manual page 385

9.2.2 Output (Y)
(1) Definition
The output (Y) is used to output control results on programs to external devices such as signal lamps, digital
displays, electromagnetic switches (contactors), or solenoids.
Data can be output to the outside like using a normally open contact.
(2) Allowable number of normally open or closed contacts
There are no restrictions on the number of normally open or closed contacts of Yn used in a program, as long as
the program capacity is not exceeded.
Programmable
logic cont
X0
Y20
X1 Y20
X3
Y20
(3) Using the output (Y) as the internal relay (M)
The output (Y) corresponding to the slots for input modules or empty slots can be utilized as the internal relay (M).
Output (Y)
Sequence
operation
Figure 9.6 Output from a CPU module to external devices
No restrictions on the quantity used.
X2
Program
Figure 9.7 Output (Y) used in a program
Input module
Figure 9.8 Using as the internal relay
Signal lamp
Digital display
Contactor
Y20
Y21
Y22
Out ladder (external device)
OUT Yn
Equivalent to
internal relay
CHAPTER9 DEVICES
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M51
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