Communication questions & answers - Control Systems Application and Knowledge Store

2

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50

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is it possible to make more than one request using Modbus RTU during a PLC cycle?

Answered 1 day ago by Rob Lyon Rank: 2

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

3

answers

2

votes

83

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How to detect frozen values using MODBUS communication?

Commented 1 day ago by Rob Lyon Rank: 2

800xA > AC 800M > CI85x modules > CI856 (S100), DCS in general > Communication > Modbus

1

answer

1

votes

77

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PLC Connect- Modbus/TCP - Coils Addressing Requirements

Commented 5 days ago by roger.a.nilsson Rank: 1825

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

1

answer

0

votes

64

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Problem with MODBUS RTU between AC800M and AC500

Commented 18 days ago by kstoilov AKS expert

Rank: 6

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

0

answers

0

votes

50

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Modbus TCP Protocol

Asked 20 days ago by Amal Rank: 518

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

4

answers

7

votes

53

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Modbus TCP/IP communication between Symphony Plus SPC700 controller & Slave Modbus

Commented 20 days ago by pedro-luis.torres-chacon Rank: 1235

Symphony Plus > Controllers > SD series hardware, DCS in general > Communication > Modbus > Modbus TCP

1

answer

1

votes

50

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MODBUS TCP/IP COMMUNICATION

Commented 25 days ago by Titus AKS expert

Rank: 5

PLC Automation > Engineering > Automation Builder > CODESYS, DCS in general > Communication > Modbus > Modbus TCP

0

answers

0

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31

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opcserver 5500 conn error to DA subscr Controller

Asked 26 days ago by bisuabb Rank: 462

800xA > AC 800M, DCS in general > Communication > OPC > _Other, DCS in general > Error

1

answer

2

votes

68

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ABB PM861 communication with Compact HMI

Answered 27 days ago by Stefan Stromqvist AKS expert

Rank: 1

DCS in general > Communication > OPC > _Other, Compact Product Suite > Operations > Compact HMI, 800xA > AC 800M > Processor modules > PM861, PM864, PM866

1

answer

0

votes

83

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MODBUS tcp/ip communication

Commented 26 days ago by Amal Rank: 518

PLC Automation > Engineering > Automation Builder, DCS in general > Communication > Modbus > Modbus TCP

3

answers

1

votes

37

views

Energy Analyzer

Commented 27 days ago by Amal Rank: 518

Safety Systems, DCS in general > Communication > Modbus > Modbus RTU

1

answer

1

votes

65

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modbus addressing

Commented 26 days ago by Amal Rank: 518

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

1

answer

0

votes

67

views

How to choose the necessary licenses.

Commented 1 month ago by kurganov Rank: 6856

DCS in general, DCS in general > Communication > PROFIBUS

0

answers

0

votes

58

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modbus tcp\ip addressing

Asked 1 month ago by Amal Rank: 518

PLC Automation > Engineering > Automation Builder > Application solutions, DCS in general > Communication > Modbus

3

answers

3

votes

135

views

modbus tcp

Answered 1 month ago by ParthibanT Rank: 110

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

0

answers

0

votes

67

views

simocode pro C integration with freelance

Commented 1 month ago by nitin.pulastya Rank: 10666

Freelance, DCS in general > Communication > PROFIBUS

1

answer

0

votes

80

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

Commented 1 month ago by Dan Rank: 1498

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

1

answer

0

votes

34

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ABB Melody PM876 redundancy controller switchover failure, who can understand the error memory infomation

Answered 2 months ago by stefan.lauxtermann Rank: 1017

DCS in general > Communication > PROFIBUS > PROFIBUS DP, Symphony Plus > Controllers

2

answers

0

votes

27

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

Commented 2 months ago by kstoilov AKS expert

Rank: 6

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

2

answers

0

votes

55

views

Versamax Profibus IO with AC800M Controller

Answered 2 months ago by Kumar Rank: 673

800xA > Connectivities > 3rd party connectivity > _Other, DCS in general > Communication > PROFIBUS

1

answer

0

votes

51

views

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

Commented 2 months ago by himanshu Rank: 268

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

1

answer

0

votes

44

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Profibus to Single Mode converter baud rate issue. WesterMo ODW-700 series works currently on MM but not on SM

Answered 2 months ago by engasalhameed Rank: 2210

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

0

answers

0

votes

33

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HOW TO READ ASCII VALUE IN PM583-ETH PLC THROUGH MODBUS TCP/IP protocol

Asked 2 months ago by WINTEX_ENGINEERS Rank: 557

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

2

answers

1

votes

48

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Modbus TCP Connection REM615 - Up[date Rate of Current Signal, address, 40140, 40139, 40138

Commented 2 months ago by gregory.richards Rank: 4182

PLC Automation > Supervisory software, DCS in general > Communication > Modbus > Modbus TCP

2

answers

0

votes

52

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AC800M OPC server 5.1 Memory leak Windows 2008 Server R2 SP1

Answered 2 months ago by Ordoban Rank: 30

DCS in general > Communication > OPC > OPC AE/DA

2

answers

0

votes

58

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Problem with vb macro code to generate tag values against time stamp at a fixed interval

Answered 2 months ago by Geof Ledin AKS expert

Rank: 36

800xA, DCS in general > Communication > OPC

2

answers

0

votes

85

views

How to Unpack a 16 bit data

Commented 2 months ago by vinomano412 Rank: 1495

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

1

answer

0

votes

83

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CI854 Healthy but Connection Down Alarms keep coming

Commented 2 months ago by b.schliessmann Rank: 196

DCS in general > Communication > PROFIBUS > PROFIBUS DP, 800xA > I/Os > S800 I/O

3

answers

2

votes

175

views

Profinet GSD Import of Siemens PN PN Coupler

Answered 1 month ago by Manimozhi Devarasu Rank: 1759

800xA > Fieldbus > PROFINET > Device Library, DCS in general > Communication > _Other

3

answers

0

votes

86

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Modbus TCP slave address 0

Answered 3 months ago by ParthibanT Rank: 110

DCS in general > Communication > Modbus > Modbus TCP

1

answer

0

votes

40

views

AC450 modbus redundancy (CI532V02 with MS)

Answered 1 month ago by Jan-Erik Rask Rank: 89

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

2

answers

1

votes

60

views

Sudden changes in speed reference using EFB - ACS580

Commented 3 months ago by wernich.raats Rank: 2238

DCS in general > Communication > _Other, Drives > AC drives > ACS580 series

2

answers

0

votes

131

views

opc for AC800M

Commented 3 months ago by MR78 Rank: 1570

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

1

answer

3

votes

109

views

800xA 6 Advant OPC DA overloaded

Commented 3 months ago by Stefan Stromqvist AKS expert

Rank: 1

800xA > Connectivities > Advant > 800xA for Advant Master, DCS in general > Communication > OPC > OPC AE/DA

1

answer

0

votes

35

views

OPC data from SIS (800XA) to DCS(Freelance) lag time

Answered 3 months ago by Stefan Stromqvist AKS expert

Rank: 1

DCS in general > Communication > OPC > OPC AE/DA

2

answers

0

votes

32

views

Change H/W details in Conductor NT s/ware v6 & system reverts back to physical Ethernet Address for old Net card

Commented 4 months ago by andrew.woodhouse Rank: 3158

DCS in general > Communication

2

answers

0

votes

26

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How to assign new network address (Not IP address) for replacement ECCP Model no: 686B811U01 dual network card.

Commented 4 months ago by andrew.woodhouse Rank: 3158

DCS in general > Communication > _Other

2

answers

1

votes

142

views

How to get data from OPC UA to CB (Control Builder).

Commented 4 months ago by prashanth.bs1 Rank: 3575

800xA > AC 800M > _Other, DCS in general > Communication > OPC > OPC UA

1

answer

0

votes

20

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Error when reading from RVG200 recorder via Modbus/TCP

Commented 4 months ago by mschori Rank: 5177

DCS in general > Communication > Modbus > Modbus TCP

1

answer

0

votes

79

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Modbus TCP problems in Freelance 2016

Commented 4 months ago by Dieter Henkel AKS expert

Rank: 10

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

0

answers

0

votes

55

views

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

Commented 4 months ago by ak Rank: 193

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

1

answer

1

votes

79

views

3rd Party 800xa OPC Alarms and Events

Answered 4 months ago by Rob Lyon Rank: 2

800xA > Operations > Alarm & events, DCS in general > Communication > OPC > OPC AE/DA

2

answers

1

votes

77

views

800XA soft controller IAC communication fail，why？

Answered 4 months ago by brightsm Rank: 736

800xA > Applications > _Other, DCS in general > Communication > MMS, 800xA > AC 800M > Softcontroller

1

answer

1

votes

71

views

Freelance OPC server

Answered 4 months ago by Ordoban Rank: 30

Freelance > Engineering, DCS in general > Communication > OPC > OPC server

0

answers

0

votes

34

views

Communication between CI873 and MVI46-DFNT (Prosoft) by EtherNetIP protocol

Commented 4 months ago by Stefan Stromqvist AKS expert

Rank: 1

DCS in general > Communication > _Other

3

answers

0

votes

65

views

How to configure PM583 COM2 port with multi-access for modbus-rtu & online access in CoDeSys?

Answered 4 months ago by GeekSquad13 Rank: 5172

DCS in general > Communication > Modbus > Modbus RTU

1

answer

0

votes

122

views

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

Answered 5 months ago by ak Rank: 193

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

0

answers

0

votes

59

views

ModbusTCP MBConn Error Code -7004

Commented 5 months ago by michelle.lim Rank: 1078

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

3

answers

0

votes

127

views

Connection 800xA basic history server ( OPC HDA ) and visual studio ( C++ )

Commented 5 months ago by Stefan Stromqvist AKS expert

Rank: 1

800xA > Connectivities > 3rd party connectivity, DCS in general > Communication > OPC > OPC AE/DA

3

answers

2

votes

91

views

Communication of REF542pluse with USB to RS232 DB9 serial port adapter cable

Commented 5 months ago by ATP AKS expert

Rank: 27

Drives, DCS in general > Communication

AKS experts