Modbus questions & answers - Control Systems Application and Knowledge Store

2

answers

4

votes

2418

views

Termination resistor for modbus rtu

Commented 1 year ago by arunvt1992 Rank: 617

DCS in general > Communication > Modbus > Modbus RTU

4

answers

3

votes

4156

views

checksum error, Modbus RTU

Asked 2 years ago by dannypat Rank: 1126

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

11

answers

1

votes

10245

views

Slave device not responding, modbus RTU

Asked 5 years ago by PM860 Rank: 960

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

2

answers

2

votes

113

views

Modbus TCP/IP

Commented 8 days ago by

Amal Rank: 271

DCS in general > Communication > Modbus > Modbus TCP

2

answers

0

votes

105

views

PM866 controller is going to fault mode

Commented 14 hours ago by Rajeesh Mariyodan Rank: 49

800xA > AC 800M > CI86x modules > CI867 (Modbus TCP), DCS in general > Communication > Modbus > Modbus TCP, 800xA > AC 800M > Processor modules > PM861, PM864, PM866, 800xA > Applications

3

answers

4

votes

4787

views

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

Commented 2 months ago by akhraszaid Rank: 193

DCS in general > Communication > Modbus

3

answers

0

votes

101

views

Register Addressing for Modbus TCP/IP while using Access Variables

Answered 1 month ago by Rajeesh Mariyodan Rank: 49

800xA > Engineering > _Other, Distribution Automation > _Other, DCS in general > Communication > Modbus > Modbus TCP

2

answers

1

votes

79

views

CI867 Data gets freezed

Answered 1 month ago by ParthibanT Rank: 103

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

0

answers

0

votes

74

views

Modbus TCP/IP

Commented 15 days ago by

Amal Rank: 271

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

1

answer

0

votes

68

views

Modbus Interface (CI534V02) got problem.

Answered 1 month ago by Jan-Erik Rask Rank: 91

Legacy DCS > Advant Master > Controllers > Advant Controller 450, DCS in general > Communication > Modbus

1

answer

0

votes

61

views

Need array to hold data for Information Manager Calculations service

Commented 23 days ago by kamil.herman Rank: 27

800xA > Applications > Information management > Information Manager, DCS in general > Communication > Modbus > Modbus TCP

3

answers

0

votes

1032

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

3

answers

3

votes

1077

views

AC500 Modbus

Asked 2 years ago by Robinson Rank: 517

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

5

answers

4

votes

3568

views

Modbus TCP/IP

Asked 5 years ago by Luka Rank: 491

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

1

answer

0

votes

49

views

modbus TCP/IP

Answered 22 hours ago by mahendra.g-patgar Rank: 371

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

2

answers

4

votes

1263

views

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

Asked 4 years ago by gurwinder Rank: 1132

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

2

answers

0

votes

63

views

CI534V02 - strange issue with "R" status (used with controller AC450)

Answered 1 month ago by Rob Lyon Rank: 2

DCS in general > Communication > Modbus > Modbus RTU

4

answers

2

votes

2109

views

modbus tcp slave not responding?

Asked 3 years ago by Aoo Rank: 1843

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

2

answers

2

votes

42

views

ABB sm500 tcp ip comm ,no valid response as slave in modscan

Commented 9 days ago by rikiwijaya98 Rank: 3086

DCS in general > Communication > Modbus > Modbus TCP

1

answer

1

votes

41

views

PI reads incorrect values from wall mounted ACS800's with older software versions

Commented 10 days ago by iliatenn Rank: 4655

Drives > AC drives > ACS800 series > ACS800 single drives, DCS in general > Communication > Modbus > Modbus RTU

1

answer

0

votes

40

views

PM867 read modbus protocol data fail,can someone hlep me?

Commented 1 month ago by Rob Lyon Rank: 2

Safety Systems > AC 800M High Integrity > Control Builder Safe, DCS in general > Communication > Modbus

3

answers

0

votes

1016

views

AC500 Modbus RTU

Asked 2 years ago by jarrett Rank: 557

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

2

answers

2

votes

1067

views

com mod mast

Answered 3 months ago by

Amal Rank: 271

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

1

answer

1

votes

943

views

CI867 as Modbus TCP slave

Asked 4 years ago by pauly25 Rank: 877

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

5

answers

5

votes

1386

views

Modbus RTU over TCP

Asked 4 years ago by insen1 Rank: 915

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

1

answer

0

votes

1924

views

modbus s7-1200 - to ACS580 inverter

Asked 4 years ago by Mnajgebaur Rank: 2842

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

1

answer

0

votes

768

views

Configure Modbus Slave address in Codesys

Asked 2 years ago by jarrett Rank: 557

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

1

answer

1

votes

971

views

Regarding %MW address problem in AC500

Asked 4 years ago by rajshasthri Rank: 1125

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

2

answers

1

votes

1119

views

32 bits dint to two 16bits dint

Asked 3 years ago by aerodriguez2010 Rank: 486

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

0

answers

0

votes

32

views

AC500 Modbus RTU bug with Coriolis FCB450

Asked 2 days ago by antonis.asimakopoulos Rank: 4654

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

2

answers

1

votes

1210

views

How to Configure MODBUS Input Register in CI867 in Access variable editor?

Asked 6 years ago by Joval Rank: 4482

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

7

answers

1

votes

931

views

CI867 Hardware Configuration

Asked 2 years ago by ertug Rank: 667

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

1

answer

2

votes

375

views

ETH_MOD_MAST Limitations.

Answered 1 year ago by ak Rank: 190

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

4

answers

2

votes

1328

views

Read/Write discrete Input/output using modbus tcp

Asked 3 years ago by Dannyf Rank: 3375

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

0

answers

0

votes

29

views

modscan same issue sm500/rgv2000

Asked 9 days ago by rikiwijaya98 Rank: 3086

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

1

answer

0

votes

28

views

Freelance v9.2 modbus

Commented 1 month ago by Randi Rank: 1332

Freelance, DCS in general > Communication > Modbus

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 4 months 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

1

votes

868

views

PM564 COM1 Pin details for RS485 2 wire modbus connection

Asked 2 years ago by saurishkr Rank: 90

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

1

answer

0

votes

2399

views

Connection REF615 and SCADA over MODBUS TCP/IP

Commented 1 year ago by heramirez Rank: 1639

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

1

answer

2

votes

1610

views

CI867 Modbus TCP Master Communication Error

Asked 3 years ago by Jagl77 Rank: 222

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

9

answers

1

votes

3068

views

MODBUS. Master not able to read slave response.

Asked 5 years ago by PM860 Rank: 960

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

1

answer

4

votes

833

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: 6340

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

1

answer

4

votes

2380

views

Modbus TCP/IP in Bailey Infi90

Asked 6 years ago by Alimard Rank: 851

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

2

answers

4

votes

340

views

Multi function meter looping

Asked 2 years ago by saffu Rank: 3312

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

5

answers

0

votes

390

views

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

Answered 1 year ago by Kevin.zhu Rank: 2759

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

1

answer

0

votes

570

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

1

answer

2

votes

163

views

Modbus addressing between AC500 and non ABB HMI

Commented 1 year ago by nitin1107 Rank: 199

PLC Automation, DCS in general > Communication > Modbus

3

answers

0

votes

690

views

Addressing in PM564 eth for reading Integer values

Asked 2 years ago by saurishkr Rank: 90

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

2

answers

3

votes

870

views

Modbus TCP/IP or OPC connection

Asked 2 years ago by hrksa Rank: 138

1

answer

4

votes

2298

views

PLC Connect Modbus TCP driver,

Asked 6 years ago by MCordero Rank: 150

DCS in general > Communication > Modbus > Modbus TCP, 800xA > Connectivities > 3rd party connectivity > PLC Connect, 800xA

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