Modbus questions & answers - Control Systems Application and Knowledge Store

4

answers

3

votes

5024

views

checksum error, Modbus RTU

Asked 3 years ago by dannypat Rank: 1164

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

2

answers

4

votes

3054

views

Termination resistor for modbus rtu

Commented 1 year ago by arunvt1992 Rank: 637

DCS in general > Communication > Modbus > Modbus RTU

11

answers

1

votes

10963

views

Slave device not responding, modbus RTU

Asked 5 years ago by PM860 Rank: 990

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

3

answers

4

votes

5151

views

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

Commented 6 months ago by akhraszaid Rank: 198

DCS in general > Communication > Modbus

2

answers

0

votes

75

views

Modbus TCP IP Communicaiton in CHMI

Commented 19 days ago by kstoilov AKS expert

Rank: 5

DCS in general > Communication > Modbus > Modbus TCP, PLC Automation > AC500-eCo > Processor modules > PM554, PM555, PM556

5

answers

4

votes

3823

views

Modbus TCP/IP

Asked 5 years ago by Luka Rank: 502

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

2

answers

2

votes

1273

views

com mod mast

Answered 7 months ago by Amal Rank: 105

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

1

answer

0

votes

61

views

Need array to hold data for Information Manager Calculations service

Commented 4 months ago by kamil.herman Rank: 25

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

1

answer

0

votes

60

views

CI867 card going unresponsive with all LED indication off and communication failure

Answered 27 days ago by ParthibanT Rank: 51

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

1

answer

1

votes

55

views

Modbus Addressing in CHMI

Commented 18 days ago by Amal Rank: 105

Compact Product Suite > Operations > Compact HMI, 800xA, DCS in general > Communication > Modbus > Modbus TCP

1

answer

0

votes

52

views

AC500 communication float or double data type with Modbus TCP/IP (ETH_MOD_MAST or other block)

Commented 7 days ago by Amal Rank: 105

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

1

answer

1

votes

999

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

4

answers

1

votes

1450

views

how to configure com_mod_master to read a holding register?

Commented 4 months ago by Amal Rank: 105

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

2

answers

4

votes

1410

views

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

Asked 4 years ago by gurwinder Rank: 1173

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

0

answers

0

votes

105

views

Modbus TCP/IP -PLC connect

Commented 16 days ago by Amal Rank: 105

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

2

answers

0

votes

540

views

Using PLC connect for modbus TCP/IP

Asked 3 years ago by mayank roy Rank: 1217

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

4

answers

2

votes

2281

views

modbus tcp slave not responding?

Asked 3 years ago by Aoo Rank: 1909

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

39

views

Support Modbus RTU Function Code 22

Answered 22 hours ago by rahil.m Rank: 1403

PLC Automation > AC500 > Applications > High Availability, DCS in general > Communication > Modbus > Modbus RTU

2

answers

1

votes

1235

views

32 bits dint to two 16bits dint

Asked 4 years ago by aerodriguez2010 Rank: 495

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

1

answer

3

votes

499

views

ETH_MOD_MAST Limitations.

Answered 1 year ago by ak Rank: 178

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

1

answer

1

votes

1071

views

CI867 as Modbus TCP slave

Asked 5 years ago by pauly25 Rank: 894

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

3

answers

0

votes

396

views

read separate registers in modbus

Commented 1 year ago by Tomas Rank: 363

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

4

answers

2

votes

1438

views

Read/Write discrete Input/output using modbus tcp

Asked 4 years ago by Dannyf Rank: 3518

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

10

answers

8

votes

2893

views

COMPACT HMI with Modbus TCP

Asked 7 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

2

answers

2

votes

1026

views

converting IEEE-754 64-bit to integer

Asked 4 years ago by anders Rank: 543

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

1

answer

0

votes

2540

views

Connection REF615 and SCADA over MODBUS TCP/IP

Commented 1 year ago by heramirez Rank: 1701

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

3

answers

0

votes

1116

views

AC500 Modbus RTU

Asked 2 years ago by jarrett Rank: 578

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

3

answers

0

votes

1198

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

0

votes

885

views

Configure Modbus Slave address in Codesys

Asked 2 years ago by jarrett Rank: 578

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

2

answers

7

votes

3354

views

CI853

Asked 6 years ago by SG Rank: 49

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

0

answers

0

votes

29

views

PROBLEM IN LOCAL_CTRL_ON IN PLC DURING MODBUS COMMUNICATION WITH VFD

Asked 3 months ago by VAP_Arun Rank: 585

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

1

answer

0

votes

28

views

Freelance v9.2 modbus

Commented 5 months ago by Randi Rank: 1384

Freelance, DCS in general > Communication > Modbus

1

answer

0

votes

2026

views

modbus s7-1200 - to ACS580 inverter

Asked 4 years ago by Mnajgebaur Rank: 2947

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

2

answers

1

votes

1003

views

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

Asked 3 years ago by Aoo Rank: 1909

DCS in general > Communication > Modbus > Modbus TCP

5

answers

5

votes

1520

views

Modbus RTU over TCP

Asked 5 years ago by insen1 Rank: 940

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

1

answer

4

votes

2393

views

PLC Connect Modbus TCP driver,

Asked 7 years ago by MCordero Rank: 152

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

1

answer

2

votes

1740

views

CI867 Modbus TCP Master Communication Error

Asked 3 years ago by Jagl77 Rank: 234

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

2

answers

3

votes

964

views

Modbus TCP/IP or OPC connection

Asked 3 years ago by hrksa Rank: 140

1

answer

1

votes

584

views

800xA communication with Modbus TCP/IP,

Asked 3 years ago by Makk_ice Rank: 538

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Control systems > Connectivity, 800xA > Connectivities > 3rd party connectivity, 800xA > System > System version > 800xA 5.1 FP4

3

answers

3

votes

352

views

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

Commented 1 year ago by ak Rank: 178

DCS in general > Communication > Modbus > Modbus RTU

2

answers

4

votes

393

views

Multi function meter looping

Asked 2 years ago by saffu Rank: 3452

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

7

answers

1

votes

1028

views

CI867 Hardware Configuration

Asked 2 years ago by ertug Rank: 682

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

2

answers

3

votes

1636

views

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

Asked 3 years ago by Aoo Rank: 1909

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

9

answers

1

votes

3180

views

MODBUS. Master not able to read slave response.

Asked 5 years ago by PM860 Rank: 990

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

1

answer

1

votes

991

views

MODBUS communication Break

Asked 5 years ago by inripra Rank: 884

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

3

votes

902

views

PLC Connect Controller Addressing for Communicating Modbus Registers

Asked 3 years ago by Makk_ice Rank: 538

DCS in general > Communication > Modbus > Modbus TCP, DCS in general > Communication > OPC, 800xA > Connectivities > 3rd party connectivity > _Other, 800xA > Connectivities > 3rd party connectivity > PLC Connect, 800xA > System > System version > 800xA 5.1 FP4

2

answers

2

votes

624

views

start address for 40001

Asked 3 years ago by usman Rank: 715

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

3

answers

0

votes

775

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

1

answer

1

votes

1380

views

CI867 Modbus TCP/IP slave

Asked 5 years ago by pauly25 Rank: 894

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

2

answers

2

votes

1105

views

Issue with communicating Meter on modbus TCP/IP using PLC Connect?

Commented 24 days ago by majdi.guebibia Rank: 1537

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

AKS experts