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2. PERFORMANCE
2.6.2 Interface specifications
Item
Number of input points
Isolation method
Rated input voltage
Rated input current
Operating voltage range
Max. number of simultaneous
input points
ON voltage/ON current
OFF voltage/OFF current
Input resistance
OFF→ON
Response time
ON→OFF
Common method
External switch
A1
R
A3
A6
B1
B3
-
+
B6
24VDC
Table 2.12 gives the interrupt function interface specification list of the A1FXCPU.
Table 2.12 Specification List
Internal circuit
Internal
R
circuit
Photocoupler
Specification
6 points (X0 to 5)
Photocoupler isolation
24VDC
5mA
21.6 to 26.4VDC (ripple ratio within 5%)
100% simultaneous ON
18V/3.5mA or more
3V/0.7mA or less
4.7kΩ
0.5ms or less
0.5ms or less
10 points-1 common (2 terminals)
External wiring
B16
A16
B15
A15
B14
A14
B13
A13
B12
A12
B11
A11
B10
A10
B9
A9
B8
A8
B7
A7
B6
A6
B5
A5
B4
A4
B3
A3
B2
A2
B1
A1
Module side
––: Indicates the terminal which is not used with this function.
2 - 17
MELSEC-A
Terminal
Signal
Terminal
Number
Name
Number
B16
─
A16
B15
─
A15
B14
─
A14
B13
─
A13
B12
─
A12
B11
─
A11
B10
A10
─
B9
A9
B8
A8
─
B7
A7
B6
COM1
A6
B5
─
A5
B4
─
A4
B3
X5
A3
B2
X3
A2
B1
X1
A1
Signal
Name
─
─
─
─
─
─
─
─
COM1
─
─
X4
X2
X0
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