8. Connections of I/O Interface
8.3 Connecting with Scan I/O Card
118
(3) Scan input (CF35)
An example is shown of a scan input circuit manufactured by the machine manufacturer. Refer to "8.3.2 (2)
Pin assignment" for the connector pin assignments.
CF35
KYCO*
KYC1*
KYC2*
KYC3*
KYC4*
KYC5*
KYC6*
KYC7*
KYD7*
KYD6*
KYD5*
KYD4*
KYD3*
KYD2*
KYD1*
KYD0*
X07
X0F
X17
X1F
X27
X2F
X37
X3F
X06
X0E
X16
X1E
X26
X2E
X36
X3E
X05
X0D
X15
X1D
X25
X2D
X35
X3D
X04
X0C
X14
X1C
X24
X2C
X34
X3C
X03
X0B
X13
X1B
X23
X2B
X33
X3B
X02
X0A
X12
X1A
X22
X2A
X32
X3A
X01
X09
X11
X19
X21
X29
X31
X39
X00
X08
X10
X18
X20
X28
X30
X38
<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*
to KYC7*
KYDO*
to KYD7*
Sneak path
prevention diode
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.
KYCO*
KYC1*
KYC2*
KYC3*
KYC4*
KYC5*
KYC6*
KYC7*
11.68ms
1.46ms