Delta Electronics Frequency Measurement Card DVP-F2FR User manual

http://www.delta.com.tw/industrialautomation/
5011637600-FME0
2005-07-08
DVP Peripheral Series
Frequency Measurement Card
Instruction Sheet
1 WARNING
This frequency measurement card is a specific function card for DVP-EH PLC, please use this card with
DVP-EH MPU.
Frequency measurement card is an OPEN TYPE without any mechnical shield. When installing this card,
user is supposed to power off the MPU and take precaution against static (anti-static glove) to prevent the
surface parts of the card from being damaged.
Do NOT connect the AC power line to any of the input/output terminals, or it will damage the PLC. Make sure
all the wiring is correct before power on.
To enhance the anti-interference performance of product, please make sure terminal FG is properly
grounded.
Frequency measurement card is only workable for the DVP-EH with the version greater than 1.1.
2 INTRODUCTION
 Thank you for choosing Delta DVP series product. The frequency measurement card (DVP-F2FR) is the
function card with 2 external inputs that accept digital signals. By using FROM-TO instruction, PLC can
read/write the data or parameter in the frequency measurement card.
 There are 255 built-in CRs (Control Register) in DVP-F2FR with 16 bits for each register. DVP-EH MPU can
control the function of DVP-F2FR by programming the CRs.
 Nameplate Explanation:
Model:
VX.XX MADE IN XXXXXX
DVPF2FR0T5280001
DVP-F2FR
Mode Number
Serial Number & Barcode
Version
 Serial Number Explanation:
Production number
Production week
Production year 2005
Production factory (Taoyuan plant)
Version type
Production model
 Product Outline:
Power indicator
Dismounting Holder
(for dismounting from PLC)
Vertical view
Screw hole
Terminal
F0
F1
RUN/STOP indicator
Terminal
3 SPECIFICATION
3.1 Basic Specification:
Electric Level Terminals [A+] & [A-], [B+] & [B-]: DC22~30V, 8~12mA.
SINK or SOURCE
Input Signal
Pulse Type
tt
t
t
t
t
1
2
3
1
2
3
t1: rising/falling time ≦0.8us
t2: ON/OFF pulse bandwidth ≧2.5us
t3: phase difference of A, B phase ≧1us
Storage -25oC~70oC (Temperature), 5~95% (Humidity)
Storage and
Environment Operation Operation: 0oC~55oC (Temperature), 50~95% (Humidity), Pollution degree: 2
3.2 Operation mode:
There are 3 types of operation mode for the frequency measurement card. User can decide the operation mode by
setting CR1. Detail information as follows:
 Mode 1: Pulse Interval Length Measurement (CR1=K1)
 Measurement method of pulse interval:
Interval of rising-edge
Interval of falling-edge
 Inputs of pulse interval measurement: F0, F1.
 Time unit of pulse interval measurement: 50ns, 100ns.
 Interrupt function: I180 will be executed after frequency measurement card detects rising edge or falling
edge in F0 and F1. And bit 0 of CR9 will inform interrupt trigger by F0 while bit1 of CR9 by F1. For more
information, please see section 6.1.
 Input frequency range: 1Hz~1kHz.
 Accuracy: ±0.01% (max.)
 Mode 2: High-speed Counter (CR1=K2)
 There are 3 types for mode 2 the high-speed counter. The maximum input frequency of Pulse/Direction can be
up to 200kHz. Explanation as follows:
 Pulse/Direction: F0 is pulse input point. F1 is the signal to control the count-up or count-down. Counting
method is shown as diagram as follow:
Count down
F0
F1
Count up
Count value
 A/B-phase two times frequency: F0 is the input pulse of A phase and F1 is the input pulse of B phase.
Counting method is shown as follow:
Count down
F0
F1
Count up
Count value
F0 (A phase)
Value Rising-edge Falling-edge
High Count-down Count-up
F1
(B phase) Low Count-up Count-down
 A/B-phase four times frequency: F0 is the input pulse of A phase and F1 is the input pulse of B phase.
Counting method is shown as follow:
F0
F1
Count up Count down
Count value
 Mode 3: Pulse Number Capture (CR1=K3)
 Input point: F0 is pulse input point. F1 is the signal to capture pulse number.
 Following diagram show the count method of pulse number:
F0
F1
Pulse Captured Period
 The calculation of the pulse numbers for F0 is based on the interval between two rising edge or falling
edge of F1.
 Interrupt function: when PLC set M1019 (flag of operation mode setting for frequency measurement card)
and D1034 (flag of operation mode setting for frequency measurement card) to set up operation mode,
I180 will be triggered based on the rising-edge or falling-edge of F1. If PLC has I180, it will execute I180.
 Accuracy: ±1 pulse.
4 CONTROL REGISTER
 DVP-EH MPU perform read/write operation to the CR via programming FROM-TO instruction.
 CR will re
 Control Register Explanation Table:
CR NO.
HW LW Attribute Factory
setting
Latched
Mode Function explanation
#0 R H2A0
°System default, read only, number=H’2A0
Frequency measurement card execution mode
K1 (mode 1) K2 (mode 2) K3 (mode 3)
#1 R/W* K0
°Pulse interval
measurement High-speed counter Pulse number
capture
Frequency measurement card Run of Stop
K0 K1
#2 R/W K0
°1,2,3
Stop Run
#3 R/W* K0
°1,3 F0 record item (range 0~40)
#4 R/W* K0
°1,3 F1 record item (range 0~40)
Trigger by rising edge or falling edge
rising edge=0, falling-edge=1
CR5 Low byte CR5 High byte
#5 R/W* K0
°1,3
F0 F1
#6 Reserved
#7 R/W* K2
°1 F0 measure time unit
#8 R/W* K2
°1 F1 measure time unit
50ns measure unit K1
100ns measure unit K2
#9 R K0
°1
Mode 1: interrupt trigger flag
When F0 trigger I180, bit0 of CR9 will be ON.
When F1 trigger I180, bit1 of CR9 will be ON.
When PLC read CR10~CR11, bit0 of CR9 will be OFF.
When PLC read CR12~CR13, bit1 of CR9 will be OFF.
#11 #10 R K0
°1 F0 pulse interval measurement
#13 #12 R K0
°1 F1 pulse interval measurement
#15 #14 R K0
°1 F0 value of frequency floating point
#17 #16 R K0
°1 F1 value of frequency floating point
#19 #18 R K0
°1 F0, F1 rising-edge or falling-edge, time difference
#21 #20 R/W K0
°2 High-speed counter value
High-speed counter value won’t
be cleared when frequency
measurement card stop
High-speed counter mode
K0 K1 K2
#22 R/W* K0
°2
Pulse/Direction
A/B phase two
times frequency
count
A/B four times
frequency count
Indication flag of count up or count down
K0 K1
#23 R K0
°2
Count up Count down
Flag of start-up counting of high-speed counter
K0 K1
#24 R/W K0
°2
Stop counting Start counting
#26 #25 R/W K0
°3 Number of captured pulse
Method of pulse count
K0 K1
#27 R/W* K0
°3
Pulse number non-accumulated Pulse number accumulated
#28 R/W K0 °1 F0 time-out setting (K0~K32767)
#29 R/W K0 °1 F1 time-out setting (K0~K32767)
#30~#32 Reserved
#33 W* K0
°
Return to factory setting
When writing “1” into CR33, all the CR of frequency measurement
card will return to factory setting and modify former “1” as “0”.
#34 R K0
°Version explanation: high byte is the value in the left side of decimal
and low b
y
te is the value in the ri
g
ht side of decimal. e.
g
. H1000 is
F0 F1Value
Rising-edge Falling-edge
Value
Rising-edge Falling-edge
High Count-down Count-up High Count-up Count-downF1
Low Count-up Count-down
F0
Low Count-down Count-up

CR NO.
HW LW Attribute Factory
setting
Latched
Mode Function explanation
V1.00 version.
#35~#49 Reserved
#50 R K51
°1,3 The index of F0 record value (record the number from CR51~130)
#51~#130 R K0
°1,3 F0 record value (each value occupy 2 group CR)
#131 R K132
°1,3 The index of F1 record value (record the number from CR132~211)
#132~#211 R K0 °1,3 F1 record value (each value occupy 2 group CR)
#222~#255 Reserved
 The usage of CR varies based on operation mode. Please follow the table above to read or write CR.
 In column Attribute, ‘*” means writing is allowed when frequency measurement card is not working.
 When the writing value is out of available range, the value of upper/lower bound shall prevail to write once the
value is out of upper/lower bound.
 The CR28 and CR29 are the time-out setting for F0 and F1. When setting them to a non-zero value in mode 1,
it will monitor the signal input from F0 or F1 and start a time-out counting. If no signal detected in F0 and F1 with
the time-out counter reaching the setting, it will clear the CR10~CR11 or CR12~CR13 and inform the PLC by
I180 interrupt. Moreover, when CR28 and CR29 are set to zero, the time-out counter will not work anymore.
 CR50~CR211 will record the value according to the operation mode. Explanation as follows:
Mode 1 Mode 2 Mode 3
CR51~CR130 To record F0 pulse interval (CR10,
CR11) N/A N/A
CR132~CR211 To record F1 pulse interval (CR12,
CR13) N/A To record F1 pulse interval (CR25, CR26
 The index number of each record is plus 2 for CR50 and CR131 after both registers record on next. Once the
index number reaches to the maximum, it will back to the 1st index number.
 It takes about 125us for instruction FROM/TO to read or write a CR of the frequency measurement card. One
more read/write item of CR, 30us more for register.
5 INSTRUCTION EXPLANATION
5.1 Instruction Explanation for Frequency Measurement Card
API
78 D FROM P Read Special Module CR Data
Instruction
Explanation  : Number of special module (m1=0~7). Number of frequency measurement card, m1=200.
 : Number of CR of special module that will be read.
 : Location to save reading data.
 : Data number of reading one time.
API
79 D TO P Special Module CR Data Write In
Instruction
Explanation  : Number of special module (m1=0~7). Number of frequency measurement card, m1=200.
 : Number of CR of special module that will be read.
 : Location to save writing data.
 : Data number of reading one time
5.2 Explanation of special D, M and Interrupt:
Device Explanation Range
D1034 Mode setting of frequency measurement card D1034 = K1~K3 (Mode 1~Mode 3)
M1019 Flag of mode setting
I180 Frequency measurement card trigger
interrupt
 After PLC run at the first scan time, PLC will detect flag M1019 is ON or OFF. If M1019 is ON, PLC will modify
the frequency measurement card’s operation mode based on D1034 setting. Program example as follow is
operation mode 1:
M1002
MOV K1 D1034
SET M1019
 PLC can use M1019 (flag of operation mode setting for frequency measurement card) and D1034 (flag of
operation mode setting for frequency measurement card) to set operation mode 1 (measurement of pulse
interval) and operation mode 2 (measurement of pulse number) to support Interrupt function I180.
6 APPLICATION EXAMPLE
6.1 Pulse Interval Length Measurement
 Following the program example of setting operation mode 1 (D1034, M1019) for frequency measurement card.
For F0 and F1, set the time unit of sampling rate is 100ns (D7, D8) and the sampling record number as 20 (D3,
D4). Moreover, I180 will be triggered when F0 or F1 detects a rising or falling edge. PLC can read CR9 via
instruction FROM to decide which channel to detect the signal.
END
IRET
DMOV D12 D300
D10
FROM K200 K9 K11
DMOV
D9
D300
M1000
M1002
D1034
K200
FROM K200
FROM K200
M1013
I 180
EI
MOV K1
SET M1019
MOV
MOV
MOV
MOV
TO
K20
K20
K2
K2
D3
D4
D7
D8
K3 D3 K6
K50 D50 K41
K131 D131 K41
FEND
& D9 K1
& D9 K2
6.2 High-speed Counter
 The setting for the following program example:
1. Operation mode: Mode 1.
2. Counting method: Pulse/Direction.
3. Set M0=ON to start counting.
END
M1002
D1034
K200
FROM K200
M1013
MOV
SET M1019
MOV
TO
K2
K200
M0
TO K24 K1 K1
K20 D20 K3
K1K22 D22
K0 D22
6.3 Pulse Number Capture
 The following program example is Mode 3 for frequency measurement card. Whenever frequency
measurement card detects the rising-edge in F1, it will trigger the Interrupt I180 of PLC. When PLC execute
Interrupt I180, it will read the content of CR25, 26 of frequency measurement card via instruction FROM.
M1002
D1034
K200
FROM K200
M1013
MOV
SET M1019
MOV
TO
K200
K20
K1
K3
D4
D4K4
K131 D131 K40
FEND
FROM
END
IRET
K25 D25 K2
M1000
I 180
EI
6.4 Differential Input Interface (please refer to the following wiring method)
A+
A-
+24VDC
4.7K
F0
4.7K
470
Differential
output NPN Tansistor
ON MMBT4401LT1G
B+
B-
+24VDC
4.7K
F1
4.7K
470
Differential
output NPN Transistor
ON MMBT4401LT1G
 Suggestion: if it is necessary to measure the input signal of frequency measurement card, please connect one
clip of the oscillograph probe to either terminal A- or B- and the other clip of the oscillograph probe to the
ground .
7 INSTALLATION AND MAINTENANCE
 Wiring Method for Frequency Measurement Card
A+
A-
4.7K
F0
4.7K
Isolating cable
+24VDC
Open collector
output
B+
B-
4.7K
F14.7K
+24VDC
Isolating cable
Open collector
output
 There is a SDSP1 indication LED in the front end of the DVP-F2FR frequency measurement card. When power
on the PLC MPU, the LED will light up (green). If the LED doesn’t light up with power on, it means that there is
error with the card. Please power off the PLC and re-install the card again.
 Before power on the system, please check A/B phase loop and make sure they connect to the input terminal
with correct electrical level.