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M800VW/M80VW Series Connection and Setup Manual
4 General Specifications
4.9 Operation Panel I/O Unit
[Outline of scan input circuit]
<Input circuit>
<Input conditions>
1
Number of points
2
Configuration
3
Rated voltage
4
Minimum applicable load
5
Input signal holding time
(*1) Note that "11.68 ms or more" is a guide of the "Input signal holding time". The input signal is recognized only when its
"ON" state is held longer than the ladder processing cycle time.
The common signals are changed over with scan input as shown in the following drawing. Key input data can be received
when the common signal is LOW. The common signal changeover cycle is 11.68 ms, but the input signal is recognized only
when state of the signal is held longer than the ladder processing cycle time.
KYC0*
KYC1*
KYC2*
KYC3*
KYC4*
KYC5*
KYC6*
KYC7*
11.68ms
Note
To perform a scan input, connect a sneak path prevention diode as illustrated below. Input signals may not be read cor-
rectly without the sneak path prevention diode.
Sneak path
prevention diode
OPKB
KYC0*
KYC1*
KYC2*
:
:
:
:
0V
5V
KYD0*
KYD1*
KYD2*
:
:
:
:
:
:
64 points
Matrix of 8 common signals × 8 data signals
5 VDC
1.4mA per point
11.68 ms or more(*1)
1.46ms
KYC0* - KYC7*
KYD0* - KYD7*
Control
circuit
93
IB-1501612-C
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