Fnc 56 - Spd / Speed Detection - Mitsubishi Electric FX3G SERIES Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
13.7 FNC 56 – SPD / Speed Detection
Outline
This instruction counts the input pulse for a specified period of time as interrupt input.
The function of this instruction varies depending on the version.
1. Instruction format
FNC 56
D SPD
2. Set data
Operand Type
S
1
S
2
D
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
1
S
1
S
2
D
1: X000 to X007 can be specified.
2: This function is supported only in FX
Mnemonic
16-bit Instruction
7 steps SPD
Device number of pulse input (X)
Time data (ms) or word device number storing the data
Head word device number storing the pulse density data
Digit Specification
/FX
3U 3UC
13 High-Speed Processing – FNC 50 to FNC 59
Operation Condition
32-bit Instruction
Continuous
13 steps DSPD
Operation
Description
Word Devices
Special
System User Index
Unit
V Z Modify
2
PLCs.
13.7 FNC 56 – SPD / Speed Detection
Mnemonic Operation Condition
Continuous
Operation
Data Type
Bit
16- or 32-bit binary
16- or 32-bit binary
Others
Real Charac-
Constant
Number ter String
K H E " "
11
12
13
14
15
Pointer
P
16
17
18
19
20
371