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I/o X And Y - Mitsubishi Electric A800 Programming Manual

800 series, plc function.
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Explanation of devices
3.9.2

I/O X and Y

The input and output are devices that are used for communication between the inverter and external devices.
The input is given ON/OFF information externally to the control input terminals. Information is used as contacts (NO contact
and NC contact) and source data of basic instructions in programs. On the other hand, the output is used to output program
operation results from the control output terminals.
Input X
• The input allows external devices, such as push-button switches, selection switches, limit switches, and digital
switches, to give commands and data to the inverter (PLC function).
• Assuming that the PLC function has internal virtual relays (Xn), the NO contacts and NC contacts of those Xn are used
in programs.
• There is no limit on the number of NO contacts and NC contacts of Xn used in a program.
No restrictions
on the number
of used contacts.
When the inverter is used without connecting any external device to the control input terminal, "X" can be substituted for
internal relay "M".
86
Sequence program
·Pushbutton switch
·Select switch
Inputs (X)
·Digital switch
1
Virtual relay
PB1
X0
LS2
X1
Input circuit (external devices)
Inverter
Outputs (Y)
Sequence
operation
X0
X1
Program
Signal lamp
Contactor
Sequence
function

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F800

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