Delta Electronics DVP-F2FR User Manual

2005-07-08

http://www.delta.c om.tw/indus trialautomation /

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:

Mode Number

Serial Number & Barcode

Version

Model:

DVP-F2FR

DVPF2FR0T5280001

VX.XX

 Serial Number Explanation:

Production number

Production week

Production year 2005

Production factory (Taoyuan plant)

Version type

Production model

 Product Outline:

Vertical view

Screw hole

Terminal

Dismounting Holder (for dismount ing from PLC)

RUN/STOP indicator

Power indicator

Terminal

3 SPECIFICATION

3.1 Basic Specification:

Terminals [A+] & [A-], [B+] & [B-]: DC22~30V, 8~12mA.

C~55oC (Temperature), 50~95% (Humidity), Pollution degree: 2

SINK or SOURCE

t1: rising/falling time ≦0.8us

t2: ON/OFF pulse bandwidth ≧2.5us

t3: phase difference of A, B phase ≧1us

Input Signal

Storage and

Environment

Electric Level

Pulse Type

Storage -25oC~70oC (Temperature), 5~95% (Humidity)

Operation Operation: 0

5011637600-FME0

MADE IN XXXXXX

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 up

Count value

Count down

 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 up

Count value

Value

(B phase)

 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:

High Count-down Count-up

Low Count-up Count-down

Rising-edge Falling-edge

Count up

Count value

Count down

F0 (A phase)

Count down

F0 F1 Value

Rising-edge Falling-edge

High Count-down Count-up High Count-up Count-downF1

Low Count-up Count-down

Value

Rising-edge Falling-edge

Low Count-down Count-up

 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:

Pulse Captu red 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:

setting

Latched

Mode Function explanation

Frequency measurement card execution mode

1 F0 measure time unit

1 F1 measure time unit

1 F0 time-out setting (K0~K32767)

1 F1 time-out setting (K0~K32767)

K1 (mode 1) K2 (mode 2) K3 (mode 3) Pulse interval measurement

Frequency measurement card Run of Stop

K0 K1

Stop Run

Trigger by rising edge or falling edge

CR5 Low byte CR5 High byte

F0 F1

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.

K0 K1 K2

Pulse/Direction

Indication flag of count up or count down

K0 K1

Count up Count down

Flag of start-up counting of high-speed counter

K0 K1

Stop counting Start counting

Pulse number non-accumulated Pulse number accumulated

When writing “1” into CR33, all the CR of frequency measurement card will return to factory setting and modify former “1” as “0”. Version explanation: high byte is the value in the left side of decimal and low b

K0 K1

te is the value in the right side of decimal. e.g. H1000 is

High-speed counter

rising edge=0, falling-edge=1

Mode 1: interrupt trigger flag

High-speed counter mode

A/B phase two

times frequency

count

Method of pulse count

Return to factory setting

Pulse number

capture

50ns measure unit K1

100ns measure unit K2

High-speed counter value won’t be cleared when frequency measurement card stop

A/B four times

frequency count

CR NO.

HW LW

#0 R H2A0 ° System default, read only, number=H’2A0

#3 R/W* K0 ° 1,3 F0 record item (range 0~40) #4 R/W* K0 ° 1,3 F1 record item (range 0~40)

#6 Reserved

#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

#26 #25 R/W K0 ° 3 Number of captured pulse

#28 R/W K0 #29 R/W K0

Attribute

#1 R/W* K0

#2 R/W K0 ° 1,2,3

#5 R/W* K0 ° 1,3

#7 R/W* K2

#8 R/W* K2

#9 R K0 ° 1

#22 R/W* K0

#23 R K0 ° 2

#24 R/W K0 ° 2

#27 R/W* K0

#33 W* K0 °

#34 R K0 °

Factory

#30~#32 Reserved

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

CR132~CR211

 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 1

To record F0 pulse interval (CR10,

CR11)

To record F1 pulse interval (CR12,

CR13)

N/A N/A

N/A

index number.

To record F1 pulse interval

(CR25, CR26

 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

Read Special Module CR Data

Instruction Explanation

API

79 D

 : 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.



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

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.

M1002

M1013

M1000

I 180

& D9 K1

& D9 K2

MOV K1

SET M1019

MOV

FROM

FROM K200

FEND

FROM K200 K9 K11

DMOV

DMOV D12 D300

IRET

END

D1034

K20

K3 D3 K6

K200

K50 D50

K200

K131 D131 K41

D10

D300

K41

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.

M1002

M1013

MOV

SET M1019

MOV

FROM K200

TO K24 K1 K1

END

D1034

K0 D22

K200

K20 D20 K3

K200

K1K22 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.

MOV

SET M1019

K20

MOV

K200

FROM K200

FEND

K200

FROM

IRET

END

D1034

K131

K25 D25

D4K4

D131

K40

I 180

M1002

M1013

M1000

6.4 Differential Input Interface (please refer to the following wiring method)

+24VDC

4.7K

Differential output

470

NPN Tansistor

ON MMBT4401LT1G

+24VDC

NPN Transistor

ON MMBT4401LT1G

A+

A-

B+

B-

4.7K

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

Open collector output

Open collector out pu t

+24VDC

Isolating cable

A+

A-

B+

B-

4.7K

F14.7K

 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.

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.