Modbus questions & answers - Control Systems Application and Knowledge Store

11

answers

1

votes

9284

views

Slave device not responding, modbus RTU

Asked 4 years ago by PM860 Rank: 929

DCS in general > Communication > Modbus > Modbus RTU, 800xA > AC 800M

4

answers

3

votes

3132

views

checksum error, Modbus RTU

Asked 2 years ago by dannypat Rank: 1076

DCS in general > Communication > Modbus > Modbus RTU, PLC Automation > AC500

2

answers

4

votes

1389

views

Termination resistor for modbus rtu

Commented 1 year ago by arunvt1992 Rank: 628

DCS in general > Communication > Modbus > Modbus RTU

3

answers

4

votes

4156

views

How can i transfer REAL numbers for example the value "5.32" through Modbus RTU ?

Asked 4 years ago by kiriakos Rank: 1950

DCS in general > Communication > Modbus

1

answer

0

votes

2114

views

Connection REF615 and SCADA over MODBUS TCP/IP

Commented 6 months ago by heramirez Rank: 1558

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Communication > Modbus, Distribution Automation > Feeder protection & control > REF6xx series

1

answer

0

votes

70

views

Modbus TCP problems in Freelance 2016

Commented 20 days ago by Dieter Henkel AKS expert

Rank: 12

Freelance > Engineering, DCS in general > Communication > Modbus > Modbus TCP

4

answers

2

votes

1780

views

modbus tcp slave not responding?

Asked 3 years ago by Aoo Rank: 1748

DCS in general > Communication > Modbus > Modbus TCP, PLC Automation > AC500 > CI modules > CI521, CI522 (Modbus TCP), PLC Automation > AC500, PLC Automation > Engineering > Automation Builder > CODESYS, PLC Automation > Engineering > Automation Builder

3

answers

0

votes

783

views

AC500 Modbus RTU

Asked 2 years ago by jarrett Rank: 538

DCS in general > Communication > Modbus > Modbus RTU, PLC Automation > AC500

5

answers

4

votes

3301

views

Modbus TCP/IP

Asked 5 years ago by Luka Rank: 484

DCS in general > Communication > Modbus > Modbus TCP, PLC Automation > AC500 > CI modules > CI521, CI522 (Modbus TCP), PLC Automation > AC500

1

answer

2

votes

837

views

com mod mast

Asked 2 years ago by Aravind Rank: 5374

DCS in general > Communication > Modbus > Modbus RTU, PLC Automation > AC500

1

answer

0

votes

83

views

How to read INPUT REGISTER address of a modbus slave device through COM_MOD_MAST.

Answered 1 month ago by ak Rank: 197

PLC Automation > AC500-eCo > _Other, DCS in general > Communication > Modbus

3

answers

0

votes

719

views

AC500 Modbus RTU Slave, adresses for input/output

Commented 1 year ago by kstoilov AKS expert

Rank: 5

PLC Automation > AC500 > _Other, DCS in general > Communication > Modbus

1

answer

1

votes

1430

views

CI867 Modbus TCP Master Communication Error

Asked 2 years ago by Jagl77 Rank: 224

DCS in general > Communication > Modbus > Modbus TCP, 800xA > AC 800M > CI86x modules > CI867 (Modbus TCP), 800xA > System > System version > 800xA 6.0

1

answer

0

votes

1726

views

modbus s7-1200 - to ACS580 inverter

Asked 4 years ago by Mnajgebaur Rank: 2681

DCS in general > Communication > Modbus > Modbus RTU, Drives > DC drives fieldbus adapter > MotiFlex > OPT-FB-003 - Modbus RTU, Drives

3

answers

1

votes

755

views

PM861 COM3 port pin details for RS232 communication.

Asked 1 year ago by saurishkr Rank: 87

DCS in general > Communication > Modbus > Modbus RTU, DCS in general > Communication > Modbus, 800xA > AC 800M, Freelance > Controllers > AC 800F > FI 820F (Serial)

2

answers

3

votes

1395

views

How do I in software configure AC500 as a Modbus TCP/IP slave

Asked 3 years ago by Aoo Rank: 1748

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Networking > Protocol > Ethernet, PLC Automation > AC500 > CI modules > CI521, CI522 (Modbus TCP), PLC Automation > AC500

1

answer

1

votes

671

views

PM564 COM1 Pin details for RS485 2 wire modbus connection

Asked 2 years ago by saurishkr Rank: 87

DCS in general > Communication > Modbus > Modbus RTU, PLC Automation > AC500-eCo

2

answers

7

votes

3202

views

CI853

Asked 6 years ago by SG Rank: 44

DCS in general > Communication > Modbus, DCS in general > Communication, DCS in general > Software > Configuration, 800xA > AC 800M > CI modules (other), 800xA > System > Administration & configuration > Configuration

3

answers

3

votes

176

views

reading a 32bit value from a modbus slave device using com_mod_mast

Commented 1 year ago by ak Rank: 197

DCS in general > Communication > Modbus > Modbus RTU

2

answers

1

votes

922

views

32 bits dint to two 16bits dint

Asked 3 years ago by aerodriguez2010 Rank: 488

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Communication, 800xA > AC 800M, 800xA > Engineering > Control Builder M

2

answers

1

votes

1677

views

Modbus TCP/IP read 32 bit value

Asked 4 years ago by mshahabahmad Rank: 740

DCS in general > Communication > Modbus > Modbus TCP

0

answers

0

votes

37

views

MODBUS TCP/IP between two PLC's AC500 V3, ETHx_MOD_MAST function block with code of error unknown (256)

Commented 27 days ago by ak Rank: 197

PLC Automation > AC500 > _Other, DCS in general > Communication > Modbus > Modbus TCP

1

answer

1

votes

1169

views

ACS 550 modbus communication

Asked 2 years ago by Nivin Rank: 4787

DCS in general > Communication > Modbus, DCS in general > Communication, Drives > DC drives fieldbus adapter > Modbus/ Modbus Plus adapter, Drives

3

answers

2

votes

437

views

Modbus Communication with Schneider MFM

Answered 8 months ago by rajul1230 Rank: 610

DCS in general > Communication > Modbus > Modbus RTU, 800xA

4

answers

2

votes

626

views

CI867 - Modbus TCP error code -7006 (slave is a PC software)

Asked 2 years ago by quangbv.ctrl Rank: 1533

DCS in general > Communication > Modbus > Modbus TCP, 800xA > AC 800M > CI86x modules > CI867 (Modbus TCP), 800xA

1

answer

0

votes

556

views

Configure Modbus Slave address in Codesys

Asked 2 years ago by jarrett Rank: 538

DCS in general > Communication > Modbus, PLC Automation > AC500

2

answers

4

votes

1022

views

Is it possible to have multimaster configuration in Modbus TCP/IP

Asked 3 years ago by gurwinder Rank: 1083

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Communication

1

answer

0

votes

1511

views

I need to connect ref615 relay having modbus connectivity with modbus to tcp/ip converter.

Asked 3 years ago by saurishkr Rank: 87

DCS in general > Communication > Modbus, DCS in general > Control systems > Hardware, Distribution Automation > Feeder protection & control > REF6xx series

3

answers

12

votes

1266

views

AC500 ETH_MOD_MAST - how to close connection

Asked 4 years ago by adi2 Rank: 209

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Communication, PLC Automation > AC500 > CI modules > CI521, CI522 (Modbus TCP), PLC Automation > AC500

1

answer

1

votes

432

views

CI853 as Modbus RTU Master

Asked 2 years ago by Amit Rupani Rank: 156

DCS in general > Communication > Modbus > Modbus RTU, 800xA > AC 800M > CI85x modules > CI853 (serial), 800xA > AC 800M, 800xA

1

answer

2

votes

240

views

ETH_MOD_MAST Limitations.

Answered 1 year ago by ak Rank: 197

PLC Automation > AC500 > _Other, DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Communication > Modbus > Modbus TCP

3

answers

0

votes

542

views

Addressing in PM564 eth for reading Integer values

Asked 2 years ago by saurishkr Rank: 87

DCS in general > Communication > Modbus > Modbus RTU, PLC Automation > AC500-eCo

9

answers

1

votes

2891

views

MODBUS. Master not able to read slave response.

Asked 4 years ago by PM860 Rank: 929

DCS in general > Communication > Modbus > Modbus RTU, 800xA > AC 800M > CI modules (other), 800xA > AC 800M

1

answer

1

votes

788

views

CI867 as Modbus TCP slave

Asked 4 years ago by pauly25 Rank: 847

DCS in general > Communication > Modbus > Modbus TCP, 800xA > AC 800M > CI86x modules > CI867 (Modbus TCP)

1

answer

1

votes

1161

views

CI867 Modbus TCP/IP slave

Asked 4 years ago by pauly25 Rank: 847

DCS in general > Communication > Modbus > Modbus TCP, 800xA > AC 800M > CI86x modules > CI867 (Modbus TCP)

8

answers

0

votes

4182

views

communication between hmi and acs drive

Asked 4 years ago by jainson Rank: 83

DCS in general > Communication > Modbus > Modbus RTU, Drives > DC drives fieldbus adapter > MotiFlex > OPT-FB-003 - Modbus RTU, Drives, PLC Automation > Control panels

7

answers

0

votes

743

views

CI867 Hardware Configuration

Asked 1 year ago by ertug Rank: 638

DCS in general > Communication > Modbus > Modbus TCP, 800xA > AC 800M > CI86x modules > CI867 (Modbus TCP), 800xA > AC 800M, 800xA

1

answer

0

votes

446

views

Communicate PM573-ETH PLC with PSTX Softstarter over Modbus RS485

Commented 1 year ago by kstoilov AKS expert

Rank: 5

PLC Automation > AC500 > Processor modules > PM571, PM572, PM573, DCS in general > Communication > Modbus > Modbus RTU, DCS in general > Software > Configuration

3

answers

3

votes

899

views

AC500 Modbus

Asked 2 years ago by Robinson Rank: 510

DCS in general > Communication > Modbus, PLC Automation > AC500

3

answers

3

votes

475

views

Modbus TCP Connection Down -7001

Asked 2 years ago by jeevan84 Rank: 639

DCS in general > Communication > Modbus > Modbus TCP, 800xA > AC 800M > CI86x modules > CI867 (Modbus TCP), 800xA > AC 800M, 800xA

4

answers

2

votes

1156

views

Read/Write discrete Input/output using modbus tcp

Asked 3 years ago by Dannyf Rank: 3149

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Communication, 800xA > Engineering, PLC Automation > AC500 > CI modules > CI521, CI522 (Modbus TCP), PLC Automation > AC500

1

answer

1

votes

973

views

PLC reading from a holding register

Asked 3 years ago by Aoo Rank: 1748

DCS in general > Communication > Modbus > Modbus TCP, PLC Automation > AC500 > CI modules > CI521, CI522 (Modbus TCP), PLC Automation > AC500

1

answer

4

votes

2265

views

Modbus TCP/IP in Bailey Infi90

Asked 6 years ago by Alimard Rank: 825

DCS in general > Communication > Modbus > Modbus TCP, Legacy DCS > Symphony Harmony INFI 90 > System, Symphony Plus > Operations > Display Library > Harmony, Symphony Plus

2

answers

3

votes

1173

views

Modbus, AC800M, PM860.

Asked 4 years ago by PM860 Rank: 929

DCS in general > Communication > Modbus > Modbus RTU, DCS in general > Software > Configuration, 800xA > AC 800M, 800xA > System > Administration & configuration > Configuration

10

answers

8

votes

2750

views

COMPACT HMI with Modbus TCP

Asked 6 years ago by csanchez411 AKS expert

Rank: 14

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Software > Configuration, 800xA > System > Administration & configuration > Configuration, Compact Product Suite > Operations > Compact HMI

3

answers

2

votes

2283

views

CI853 Modbus Communication with Slave

Asked 5 years ago by MichaelStarc Rank: 317

DCS in general > Communication > Modbus, 800xA > AC 800M > CI modules (other), 800xA > AC 800M, Freelance > Controllers > AC 800F > FI 820F (Serial)

5

answers

0

votes

280

views

Problem about Modbus communication between AC800M PM856 COM3 and RS485 2 WIRE

Answered 11 months ago by Kevin.zhu Rank: 2606

800xA > AC 800M > Processor modules > PM85x, DCS in general > Communication > Modbus > Modbus RTU

3

answers

0

votes

453

views

PM564 ETH FOR MODBUS TO MODBUS TCP

Asked 2 years ago by saurishkr Rank: 87

DCS in general > Communication > Modbus > Modbus RTU, DCS in general > Communication > Modbus > Modbus TCP, PLC Automation > AC500-eCo, PLC Automation > Engineering > Automation Builder > CODESYS, PLC Automation > Engineering > Automation Builder

2

answers

1

votes

834

views

Modbus TCP slave (PLC) Is diconnecting due to watchdog timer?

Asked 3 years ago by Aoo Rank: 1748

DCS in general > Communication > Modbus > Modbus TCP

1

answer

0

votes

1239

views

How to Configure the PM573 PLC to Intouch SCADA Communication

Asked 4 years ago by Balamurugan Rank: 1953

DCS in general > Communication > Modbus, DCS in general > Communication > OPC, 800xA > Connectivities > 3rd party connectivity > _Other, PLC Automation > AC500, PLC Automation > Supervisory software > DigiVis 500

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