Reading Count Values; Selecting Counter Format - Mitsubishi MELSEC-Q Series User Manual

12
COUNTER FUNCTION
* 1:
* 2:
12.1.2
Count operation starts when the count enable command (Y1 to Y1E) is turned ON.
Count values are stored to "
Since the contents of "
the latest count value can be read from "
For details of count operation, refer to Section 12.4.
12.1.3
Select the linear counter or ring counter in the intelligent function module switch setting of
GX Developer.
12
- 2 12.1 Outline of Counter Function

12.1.2 Reading count values

IMPORTANT
The module may not be able to operate normally if each I/O signal logic is set
incorrectly. Pay special attention when changing the setting from the default value.
When using the input method of either 1 multiple of 2 phases or 2 multiples of 2
phases, be sure to input 2-phase pulses. With these input methods, pulses are
counted according to the changes between phase A and phase B.
Reading count values
Md.3
Item
Count value
Md.3

Selecting counter format

• For setting details of counter format, refer to Section 5.6.
• For details of linear counter, refer to Section 12.2.
• For details of ring counter, refer to Section 12.3.
Count value" in 31-bit signed binary.
Md.3
Count value" are automatically updated by count operation,
Count value".
Md.3
Buffer memory address
CH1
74
75
CH2 CH3
174 274
175 275