Connecting To External Devices; I/O Signals - Mitsubishi Electric MELSEC-L02SCPU User Manual

8.2

Connecting to External Devices

8.2.1

I/O signals

The following shows the internal circuits on interfaces for connecting LCPU external devices using schematic
drawings.  in a signal name indicates either 1 (CH1) or 2 (CH2). For I/O signal settings, refer to  Page 191,
Section 8.3.
(1) Input
Pin number
CH1 CH2
B20 A20
3.6k
1/2W
B19 A19
680
1/10W
B18 A18
B17 A17
3.6k
1/2W
B16 A16
680
1/10W
B15 A15
B14 A14
3.6k
1/2W
B13 A13
680
1/10W
B12 A12
B11 A11
B10 A10
5.6k
1/3W
B09 A09
5.6k
1/3W
B08 A08
5.6k
1/3W
B07 A07
5.6k
1/3W
B06 A06
5.6k
1/3W
182
Internal circuit
220
220
220
1k
1/10W
1k
1/10W
1k
1/10W
1k
1/10W
1k
1/10W
Signal name
Phase A (PULSE A )
Phase B (PULSE B )
Phase Z (PULSE Z )
Input common
Function input signal (FUNC )
Latch counter input signal (LATCH )
(Not used for the high-speed counter function)
+24V (PULSE A -24V)
Differential (PULSE A -DIFF)
COM (PULSE A -COM)
+24V (PULSE B -24V)
Differential (PULSE B -DIFF)
COM (PULSE B -COM)
+24V (PULSE Z -24V)
Differential (PULSE Z -DIFF)
COM (PULSE Z -COM)
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