VFD com (XGB-iG5A)_Modbus

7/22/2019 VFD com (XGB-iG5A)_Modbus

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LSIS PLC/DriveLSIS PLC/Drive

CommunicationCommunicationfor XGB and Drive (iG5A)for XGB and Drive (iG5A)

-- ModbusModbus RTU protocolRTU protocol


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Communication with VFD (Variable Frequency Drive)Communication with VFD (Variable Frequency Drive)

Application Solution

Configuration

Diagnosis

XG5000

XG-PD

Drive Setup

Configuration

RS-485 (Modbus communication)

Baud rate: 9600, Data bit: 8, Stop bit : 1, Parity bit : None

XGB

RS-485

Buil t-in Cnet

iG5A

Station: 1

+

-

S+

S-

S+

S-

iG5A

Station: 2

Wiring Diagram

Note that baud rate and stop/parity bit are selectable in I/O group.

* I/O group: I61 baud rate, I65: parity/stop bit setting.


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Drive parameter setting

XGB Parameter sett ing: XG-PD

Set up each drive communication-concerning parameter as follows.

For iG5A (station: 1)

* DRV-03 [Drive mode]: 3 [RS-485]

* DRV-04 [Freq. mode]: 7 [RS-485]* I/O 59 [Communication protocol] : 0 [Modbus RTU]

* I/O 60 [VFD station number]: 1

* I/O 61 [communication speed]: 3 (9600bps)

For iG5A (station: 2)

* DRV-03 [Drive mode]: 3 [RS-485]

* DRV-04 [Freq. mode]: 7 [RS-485]* I/O 59 [communication protocol]: 0 [Modbus RTU]

* I/O 60 [VFD station number]: 1

* I/O 61 [communication speed]: 3 (9600bps)

For XGB communication parameter sett ing, XG-PD (Network Manager) is used.

Af ter running XG-PD, select [Online][Connect ].

When connected, select [Online][Read IO Information].

Diagnosis

XG5000

XG-PD

Drive Setup

Configuration


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XGB parameter setting: XG-PD

Double

click

After setting is

done, click

[P2P].

Diagnosis

XG5000

XG-PD

- XGB Setup

Drive Setup

Configuration Communication with VFD (Variable Frequency Drive)Communication with VFD (Variable Frequency Drive)



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Double

click

XGB parameter setting: XG-PD

Diagnosis

XG5000

XG-PD

- P2P

Drive Setup




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P2P parameter setting: iG5A (station 1) Write request

Double

click

ClickSlave

address

Condit ional flag: M0000This request frame is sent from XGB

at M0 bit r ising edge.

Data type/Data size

This request frame is to wr ite 4 word

data to iG5A.

Diagnosis

XG5000

XG-PD

- P2P

Drive Setup




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Modbus corresponding addresses of iG5A are acquired by the following formula.

[Modbus address] = [iG5A address] 1

Modbus word output area is from 0x40000. Therefore, [0x0005] is to be [0x40004].Here D0000 is assigned to 0x40004, which means D0 data value is sent to ref. Freq. area.

In the previous slide, 4 words are to be sent. Therefore,

D0 for Reference Frequency

D1 for Run command (D1.0 bit is on iG5A stop; D1.1 bit is on iG5A forward run, etc).D2 for ACC time

D3 for DEC time

Diagnosis

XG5000

XG-PD

- P2P

Drive Setup




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P2P parameter setting: iG5A (station 1) Read request

ClickSlaveaddress

Condit ional flag: M0001This request frame is sent from XGB at M1 bit r ising edge.

Data type/Data size

This request frame is to read 8 word data from iG5A.

Note that data size should be less than or equal to 8. If not, iG5A does not respond

properly.

Diagnosis

XG5000

XG-PD

- P2P

Drive Setup




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Modbus word input area is from 0x30000. Therefore, [0x0007] to be [0x30006].

Here D0020 is assigned to 0x30006, which means ACC time is sent to D20.

In the previous s lide, 8 words to be sent from drive to XGB. Therefore,

D20 for ACC time; D21 for DEC time, D22 for Output Current; D23 for Reference Frequency;

D24 for Output vol tage; D25 for DC Link vol tage; D26 for Output power;

D27 for dr ive status (D27.0 bit is on iG5A stop; D27.1 bit is on iG5A forward run, etc).

Diagnosis

XG5000

XG-PD

- P2P

Drive Setup




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ClickSlaveaddress

Condit ional flag: M0002

This request frame is sent from XGB during M2 bit rising edge. Data type/Data size

This request f rame is to wri te 4 word data to iG5A.

Data assignment method: the same as iG5A (station 1)

D100 for Reference Frequency

D101 for Run command (D1.0 bit i s on iG5A stop; D1.1 bit is on iG5A forward run, etc).D102 for ACC time

D103 for DEC time

Diagnosis

XG5000

XG-PD

- P2P

Drive Setup




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ClickSlaveaddress

Conditional flag: M0003

This request frame is sent from XGB during M3 bit rising edge.

Data type/Data size

This request frame is to read 8 word data from dr ive to XGB.

Data assignment method: the same as iG5A (station 1)

D120 for ACC time; D121 for DEC time, D122 for Output Current; D123 for Reference Frequency;

D124 for Output voltage; D125 for DC Link vol tage; D126 for Output power;

D27 for dr ive status (D27.0 bit is on iG5A stop; D27.1 bit is on iG5A forward run, etc).

Diagnosis

XG5000

XG-PD

- P2P

Drive Setup




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XG-PD download/Link enable

Af ter l ink enable,

select [Online][Reset].

Diagnosis

XG5000

XG-PD

- Down & Link

Drive Setup

Configuration




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XG5000 Programming: Part I

For programming, please refer to XG5000 program after opening i t.

Diagnosis

XG5000

- Programming

XG-PD

Drive Setup

Configuration




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XG5000 Programming: Part II

Diagnosis

XG5000

- Programming

XG-PD

Drive Setup

Configuration




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XG5000 Programming: Part III

[View][Devices/Variables] or other item to see its variable or comment.

Diagnosis

XG5000

- Programming

XG-PD

Drive Setup

Configuration




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XG5000 Programming: Part IV

Diagnosis

XG5000

- Programming

XG-PD

Drive Setup

Configuration




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XG5000 Programming: Part V

Diagnosis

XG5000

- Programming

XG-PD

Drive Setup

Configuration




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iG5A (#1) Control: Set Ref. Freq. and make it run forward

Reference frequency is set as 12.34Hz.

Diagnosis

XG5000

- Monitoring

XG-PD

Drive Setup

Configuration




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iG5A (#1) Control: Set ACC/DEC time of station 1

iG5A reference frequency is set as 12.34Hz. Its status is FWD Run. ACC and DEC time

is set as 1.0 and 2.0 sec, respectively. Now lets moni tor iG5A.

Diagnosis

XG5000

- Monitoring

XG-PD

Drive Setup

Configuration




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iG5A (#1) Monitoring: operation information

iG5A is running as we set in the previous slide.

D27.1 bit means its operation status is FWD Run.

Diagnosis

XG5000

- Monitoring

XG-PD

Drive Setup

Configuration




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iG5A (#2) Control: Ref. Freq., Operation command and ACC/DEC time

Station 2 reference frequency: 43.21Hz

Station 2 operation command: Reverse running

Station 2 ACC time: 3.0 sec

Station 2 DEC time: 4.0 sec

Diagnosis

XG5000

- Monitoring

XG-PD

Drive Setup

Configuration




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iG5A (#2) Monitoring: operation information

iG5A is running as we set in the previous slide.

D27.1 bit means its operation status is REV Run.

Diagnosis

XG5000

- Monitoring

XG-PD

Drive Setup

Configuration




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iG5A (#1 & #2) Communication Status

Click [Variable Monitor ing] icon:

Now there is no error in either station 1 or 2.

Diagnosis

XG5000

- Monitoring

XG-PD

Drive Setup

Configuration




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iG5A (#1 & #2) Communication Status

When station 1 is turned off or disconnected from network, its error flags are increased.

Af ter the problem is recovered, error-concerned f lags are not increased but hold thei r

values. Note that L relay is latched.

Diagnosis

XG5000

- Monitoring

XG-PD

Drive Setup

Configuration




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System diagnosis: XG-PD

In XG-PD, select [Online][System Diagnosis] where you are able to see comm. Status.

Right-mouse

click

Select [Channel 2] and click [Start] then

you wil l see its communication frame.

Even though XGB has no RTC, but i t shows

time stamp when the transmission/reception

frame pass through the comm. port.This is important because in 1:N comm. In

RS-485 (half-duplex) system, transmission

and reception frame should be interlocked.

And a user could know the best poss ib le

condit ional flag to send each frame by this

time stamp.

Diagnosis

XG5000

XG-PD

Drive Setup

Configuration




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1 2

3

4

(1) If there is unknown in Result, the frame is wrong.

(2) It shows when each frame passes through the communication port.

(3) When the t ransmission frame is sent to iG5A (station 1) at 0:00:02:770 (2.770sec after

monitoring start), the reception frame is delivered to XGB from station 1 after 0.03sec later.

(4) It shows one cycle in th is system composed of 8 frames.

Write request to #1 (M0 bit )Write response from #1 Read request to #1 (M1 bit )Read response from #1Write request to #2 (M2 bit ) Write response from #2Read request to #2 (M3 bit ) Read response from #2Note that every transmission frame is sent with 200ms period.

Diagnosis

XG5000

XG-PD

Drive Setup

Configuration




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In XG-PD, select [Online][System Diagnosis] where you are able to see comm. Status.

Right-mouse

click

Select [P2P Service] and click [Multip le

Reading] then you will see comm. status.

Whenever an communication error occurs,

its error count w ill increase.

Diagnosis

XG5000

XG-PD

Drive Setup

Configuration



Documents

VFD com (XGB-iG5A)_Modbus