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5
FUNCTIONS
5.1 Pulse Input and Count Methods
5.1.1 Types of the pulse input method
5 - 1
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
PROCEDURES AND
SETTINGS BEFORE
OPERATION
5
FUNCTIONS
6
UTILITY PACKAGE (GX
Configurator-CT)
7
PROGRAMMING
8
TROUBLESHOOTING
CHAPTER5 FUNCTIONS
This chapter describes functions of the QD64D2.
5.1 Pulse Input and Count Methods
5.1.1 Types of the pulse input method
The pulse input method has six types as shown on Table 5.1.
This chapter describes I/O numbers (X/Y) of channel 1 only.
For I/O numbers (X/Y) of channel 2, refer to Section 3.3.1.
Set the count method with the intelligent function module switch setting of GX Developer
(refer to Section 4.5).
Table 5.1 Types of the pulse input method
Pulse input
method
Count timing
1 multiple of 1 phase
For addition count
Counts on the rising edge ( ) of A.
B and the subtraction count command (Y05) are OFF.
For subtraction
count
Counts on the falling edge ( ) of A.
B or the subtraction count command (Y05) is ON.
2 multiples of 1
phase
For addition count
Counts on the rising ( ) and falling ( ) edges of A.
B and the subtraction count command (Y05) are OFF.
For subtraction
count
Counts on the rising ( ) and falling ( ) edges of A.
B or the subtraction count command (Y05) is ON.
CW/CCW
For addition count
Counts on the rising edge ( ) of A.
B is OFF.
For subtraction
count
A is OFF.
Counts on the rising edge ( ) of B.
1 multiple of 2
phases
For addition count
When B is OFF, counts on the rising edge ( ) of A.
For subtraction
count
When B is OFF, counts on the falling edge ( ) of A.
A
B
(and subtraction count
command (Y05))
A
B
(or subtraction count
command (Y05))
A
B
(and subtraction count
command (Y05))
A
B
(or subtraction count
command (Y05))
A
B
A
B
A
B
A
B