High-Speed Counter - Mitsubishi Electric MELSEC iQ-F FX5U User Manual

High-speed counter

Examples of wiring for high-speed counters are shown below.
When capturing pulses of a response frequency of 50 to 200 kHz, refer to Page 107 In the case of capturing high-speed
pulses.
For details on the high-speed counters, refer to MELSEC iQ-F FX5 User's Manual (Application).
For the programs, refer to MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks).
1-phase 1-input (S/W)
The wiring examples in this section use the following settings. When settings other than those in the table are used, use the
examples shown in the following figures as references for wiring.
CH to be used
CH1 (CPU module) or CH9 (high-speed pulse
input/output module)
The settings of the high-speed counters are set by using the parameter settings of the engineering tool.
For details, refer to MELSEC iQ-F FX5 User's Manual (Application).
■Example of wiring
• NPN open collector transistor output rotary encoder
In the case of sink wiring
• When the input terminals of the CPU module are used
Fuse
L
*1
Class D grounding
N
S/S
0V
24V
1.5 k
X0
CPU module
• PNP open collector transistor output rotary encoder
In the case of source wiring
• When the input terminals of the CPU module are used
Fuse
L
*1
Class D grounding
N
S/S
0V
24V
1.5 k
X0
CPU module
*1 The grounding resistance should be 100  or less.
Pulse input mode External preset input
1-phase 1-input (S/W) Invalid
Rotary encoder
24 V DC
24V
0V
A phase
B phase
Z phase
Rotary encoder
24 V DC
24V
0V
A phase
B phase
Z phase
External enable input Operation mode
Invalid
• When the input terminals of the High-speed pulse
input/output module are used
Fuse
L
*1
Class D grounding
N
S/S
0V
CPU
24V
module
S/S
1.5 k
High-speed
X0
pulse
input/output
module
• When the input terminals of the High-speed pulse
input/output module are used
Fuse
L
*1
Class D grounding
N
S/S
0V
CPU
24V
module
S/S
1.5 k
High-speed
X0
pulse
input/output
module
6.8 Examples of Wiring for Various Uses
Normal mode
Rotary encoder
24 V DC
24V
0V
A phase
B phase
Z phase
Rotary encoder
24 V DC
24V
0V
A phase
B phase
Z phase
6 WIRING
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6