Xinje XD Series User Manual

382
10-2 Frequency measurement [FRQM]
1) Summary
Measure the frequency.
Frequency measurement [FRQM]
16 bits
instruction
-
32 bits
instruction
FRQM
execution
condition
Normally ON OFF coil
suitable
models
XD/XL (except
XD1/XL1/XDH/XLH)
hardware
requirement
-
software
requirements
-
2)Operands
Operands
Function
Type
S1
Sampling pulse numbers
16 bits, BIN
S2
The display precision
16bits, BIN
D
Measurement result
32 bits, BIN
S3
Pulse input terminal
bit
3) Suitable Soft Components
Operands
Word soft elements
Bit soft elements
System
Consta
nt
Module
System
D
F
D
T
D
C
D
D
X
D
Y
D
M
D
S
K/H
I
D
Q
D
X
Y
M
S
T
C
Dn.
m
S1
●
●
●
●
●
S2
●
●
●
●
●
D
●
*Notes: D includes D, HD; TD includes TD, HTD; CD includes CD, HCD, HSCD, HSD; DM
includes DM, DHM; DS includes DS, DHS. M includes M,HM,SM
；
S includes S,HS
；
T
includes T,HT
；
C includes C, HC.

The sampling pulse numbers can be adjusted according to the frequency, the higher the
frequency, the bigger the sampling pulse numbers.

Measurement result, the unit is Hz.

Display resolution: only can set to 1, 10, 100, 1000, 10000.

When M0 is ON, FRQM collects 20 pulses from X0, and records the sampling time. The
result of sampling numbers dividing by sampling time will be saved in D100. The
measurement process will repeat. If the measurement freqeuncy is less than the
measurement range, the result is 0.
Function
and Action
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Xinje XD Series Specifications

General

Input Voltage	24V DC
Storage Temperature	-20°C to 70°C
Protection Class	IP20
Type	PLC
Series	XD
Programming Language	Ladder Logic, Instruction List
Communication Interface	RS232, RS485
Power Supply	24V DC
Digital Inputs	Available (number varies by model)
Digital Outputs	Available (number varies by model)
Analog Inputs	Available (number varies by model)
Analog Outputs	Available (number varies by model)
Output Type	Relay, Transistor
Number of Inputs	Varies by model (see Digital Inputs and Analog Inputs)
Number of Outputs	Varies by model (see Digital Outputs and Analog Outputs)
Operating Temperature	0°C to 50°C
Humidity	5% to 95% (non-condensing)