Mitsubishi Electric M70V Series Connection Manual page 82

(a) Scan input
An example is shown of a scan input circuit manufactured by the machine manufacturer.
CF35
KYCO*
KYC1*
KYC2*
KYC3*
KYC4*
KYC5*
KYC6*
KYC7*
KYD7*
KYD6*
KYD5*
KYD4*
KYD3*
KYD2*
KYD1*
KYD0*
<Example of a circuit manufactured by the machine tool builder>
(Note) To scan input, connect a sneak path prevention diode as shown in the following drawing. The
unit may not be able to read the correct input signals without a sneak path prevention diode
installed.
KYCO*
KYC7*
to
KYDO*
to KYD7*
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 11.68ms, but
the input signal will not be recognized unless it is held for the ladder processing cycle time or longer. The
scan input is a 5V system.
KYCO*
KYC1*
KYC2*
KYC3*
KYC4*
KYC5*
KYC6*
KYC7*
X07 X06 X05 X04
X0F X0E X0D X0C
X17 X16 X15 X14
X1F X1E X1D X1C
X27 X26 X25 X24
X2F X2E X2D X2C
X37 X36 X35 X34
X3F X3E X3D X3C
Sneak path
prevention diode
1.46ms
11.68ms
M70V Series Connection Manual
X03 X02 X01 X00
X0B X0A X09 X08
X13 X12 X11 X10
X1B X1A X19 X18
X23 X22 X21 X20
X2B X2A X29 X28
X33 X32 X31 X30
X3B X3A X39 X38
2.7 Scan I/O Unit
57