Modbus questions & answers - Control Systems Application and Knowledge Store

2

answers

4

votes

1881

views

Termination resistor for modbus rtu

Commented 1 year ago by arunvt1992 Rank: 606

DCS in general > Communication > Modbus > Modbus RTU

11

answers

1

votes

9745

views

Slave device not responding, modbus RTU

Asked 4 years ago by PM860 Rank: 948

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

4

answers

3

votes

3609

views

checksum error, Modbus RTU

Asked 2 years ago by dannypat Rank: 1097

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

3

answers

0

votes

114

views

modbus tcp

Answered 11 days ago by ParthibanT Rank: 113

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

3

answers

4

votes

4368

views

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

Asked 4 years ago by kiriakos Rank: 1994

DCS in general > Communication > Modbus

4

answers

2

votes

1947

views

modbus tcp slave not responding?

Asked 3 years ago by Aoo Rank: 1779

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

1

answer

0

votes

2248

views

Connection REF615 and SCADA over MODBUS TCP/IP

Commented 9 months ago by heramirez Rank: 1591

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

1

answer

0

votes

69

views

Can I acheive Modbus TCP/IP communication between PM585 and CI522 (Remote I/O) by using ETH_MOD_MASTER FB?

Commented 18 days ago by Dan Rank: 2022

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

3

answers

0

votes

842

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

2

answers

4

votes

1114

views

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

Asked 4 years ago by gurwinder Rank: 1104

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

5

answers

4

votes

3405

views

Modbus TCP/IP

Asked 5 years ago by Luka Rank: 494

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

3

answers

0

votes

886

views

AC500 Modbus RTU

Asked 2 years ago by jarrett Rank: 545

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

2

answers

2

votes

934

views

com mod mast

Answered 6 days ago by

Amal Rank: 1077

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

2

answers

1

votes

1773

views

Modbus TCP/IP read 32 bit value

Asked 4 years ago by mshahabahmad Rank: 755

DCS in general > Communication > Modbus > Modbus TCP

9

answers

1

votes

2975

views

MODBUS. Master not able to read slave response.

Asked 4 years ago by PM860 Rank: 948

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

2

answers

3

votes

1474

views

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

Asked 3 years ago by Aoo Rank: 1779

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

4

answers

2

votes

1234

views

Read/Write discrete Input/output using modbus tcp

Asked 3 years ago by Dannyf Rank: 3256

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

0

votes

1814

views

modbus s7-1200 - to ACS580 inverter

Asked 4 years ago by Mnajgebaur Rank: 2749

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

1

answer

2

votes

1521

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

3

answers

0

votes

212

views

read separate registers in modbus

Commented 10 months ago by Tomas Rank: 490

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

1

answer

0

votes

654

views

Configure Modbus Slave address in Codesys

Asked 2 years ago by jarrett Rank: 545

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

1

answer

1

votes

1238

views

ACS 550 modbus communication

Asked 2 years ago by Nivin Rank: 4922

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

2

answers

1

votes

1002

views

32 bits dint to two 16bits dint

Asked 3 years ago by aerodriguez2010 Rank: 476

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

7

answers

1

votes

797

views

CI867 Hardware Configuration

Asked 2 years ago by ertug Rank: 652

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

3

answers

0

votes

613

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

3

answers

3

votes

238

views

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

Commented 1 year ago by ak Rank: 188

DCS in general > Communication > Modbus > Modbus RTU

2

answers

0

votes

615

views

I wish to know how to set up Ethernet modbus on the control builder and codesys software(ETH_MOD_MAST FB)

Asked 4 years ago by MTHOBISI Rank: 1565

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

3

answers

2

votes

500

views

Modbus Communication with Schneider MFM

Answered 10 months ago by rajul1230 Rank: 622

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

1

answer

1

votes

770

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

1

answer

1

votes

1581

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

4

answers

2

votes

935

views

AC500 PLC to PLC communication

Asked 3 years ago by asad1837 Rank: 542

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

2

answers

3

votes

793

views

Modbus TCP/IP or OPC connection

Asked 2 years ago by hrksa Rank: 140

2

answers

0

votes

591

views

Setting up ModBus TCP

Asked 2 years ago by bolman Rank: 5576

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

3

answers

3

votes

950

views

AC500 Modbus

Asked 2 years ago by Robinson Rank: 509

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

1

answer

1

votes

873

views

Regarding %MW address problem in AC500

Asked 4 years ago by rajshasthri Rank: 1096

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

1

answer

1

votes

1207

views

CI867 Modbus TCP/IP slave

Asked 4 years ago by pauly25 Rank: 864

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

3

answers

1

votes

810

views

PM861 COM3 port pin details for RS232 communication.

Asked 2 years 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)

4

answers

1

votes

1142

views

how to configure com_mod_master to read a holding register?

Commented 10 days ago by

Amal Rank: 1077

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

2

answers

0

votes

27

views

Data from devices connected with modbus rtu does not come from time to time? zero is coming. why?

Commented 1 month ago by kstoilov AKS expert

Rank: 5

PLC Automation > AC500-eCo > Processor modules > PM564, PM565, PM566, DCS in general > Communication > Modbus > Modbus RTU

1

answer

0

votes

49

views

How Many parameter can be read through Modbus serial moduleCI853 from a single slave and in Total

Commented 1 month ago by himanshu Rank: 265

800xA > Fieldbus > _Other, DCS in general > Communication > Modbus > Modbus TCP

4

answers

2

votes

420

views

Multidrop Communication in CI853

Asked 2 years ago by manojjoshi10 Rank: 829

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

1

answer

0

votes

769

views

AC500 Modbus RTU control of ACS880-01 through EFB

Asked 2 years ago by SamTeng Rank: 6353

DCS in general > Communication > Modbus > Modbus RTU, Drives > AC drives > ACS800 series, PLC Automation > AC500

1

answer

1

votes

841

views

CI867 as Modbus TCP slave

Asked 4 years ago by pauly25 Rank: 864

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

1

answer

1

votes

848

views

MODBUS communication Break

Asked 5 years ago by inripra Rank: 855

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Communication, DCS in general > Software > Configuration, 800xA > System > Administration & configuration > Configuration, Freelance > System > Administration & configuration > Configuration

2

answers

4

votes

2114

views

Does anyone have a working example of UDP Master, to Multiple Slave Data Exchange with AC500?

Asked 6 years ago by josh.donovan Rank: 130

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

3

answers

12

votes

1316

views

AC500 ETH_MOD_MAST - how to close connection

Asked 4 years ago by adi2 Rank: 213

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

2

answers

2

votes

457

views

start address for 40001

Asked 3 years ago by usman Rank: 686

DCS in general > Communication > Modbus > Modbus RTU, DCS in general > Control systems > Connectivity, 800xA > AC 800M, 800xA > Connectivities > 3rd party connectivity

1

answer

2

votes

297

views

ETH_MOD_MAST Limitations.

Answered 1 year ago by ak Rank: 188

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

1

answer

0

votes

556

views

MODBUS TCP/IP

Asked 3 years ago by asad1837 Rank: 542

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

1

answer

4

votes

765

views

hi,I see error 12291 error when I configurate modbus rtu in AC500 with com_mod_mast how can I solve this problem?

Asked 4 years ago by beddem Rank: 6104

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

AKS experts