Kepware

The project configuration seems really limited. Only allowing one person at a time to connect and make changes.We were hoping the API would help but it seems to require giving itself write access over and over again for every edit you make, changing the project ID and not allowing, as far as I can tell, any kind of bulk import. So if I want to manipulate 100 tags it gives itself write access 100 different times and is fairly slow.I'm not sure but it seemed like anytime the API was manipulated anything if there was another user live looking at the project they lost access.Am I missing something? Is there a way to have more than one user editing a project at a time? Is there any way to bulk import devices and channels and tags in one shot with the API?

Dear All, I am trying to communicate FX5 with Kepserver, however failing to connect despite different trials. I have set PLC setting to SLMP setting with both TCP and UDP port and set it accordingly on the Kepserver. Still not able to communicate with the PLC with Tags value as BAD.I am attaching the pictures for reference also.  

Hi everyone,I am looking for some advice or assistance regarding a sudden licensing failure. We purchased a perpetual license for KEPServerEX 6.6 in 2018 through a reseller, INRAY (bundled with their FAS Server software).The system had been running smoothly without any issues until August 1, 2026, when the following error suddenly began appearing in the event log: Licensing - License for feature Siemens TCP/IP Ethernet cannot be accessed [error=-157] and must be reactivated.In the License Utility, the status for the Manufacturing Suite product is currently showing as Status - Broken: Anchor. (Note: We have not made any hardware changes, MAC address modifications, or VM migrations recently).Our reseller, INRAY, has declined to assist us because we do not have an active support contract with them. However, we are not looking for software updates or engineering support—we just need to restore a paid perpetual license that broke unexpectedly on its own.Has anyone encountered this specific

I have KepServer on PC IP 172.17.90.31 with Modbus TCP/IP Driver for Yokogawa DCS using ALE111 device with IP 172.17.90.30 communication. It seems comms is only established when Device ID in the project is <127.0.0.1>,0 and not with <172.17.90.30>,0. I understand this is due to ALE111 is Modbus Master in this case. I am facing issues where TAGs value are not accurately updating in some TAGs, but some are ok. I also have issue where the real parameter values in data type "float" always show "0" and do not update on live run. If I stop the KepServer service via Windows "runtime - End Task" and then restart KepSever project, the QC on initial handshake will display the last stopped value or stored value on the parameter TAGs, but on second update onwards, it will go back to "0" value and no update. I can successfully write to these parameter TAGs via QC and confirm the handshake with device. Can I please get support, if the Project configuration needs modification or Device pr

I’m having similar issue. I restarted the service multiple times. Each time I restart the Runtime service, the problem seems to go away but then the KEPServerEX Configuration tool stops working again. What else could be done to permanently fix the issue?

I HAD A PROBLEM WITH A VM AND I HAD TO RECOVER IT, IN THE PROCESS I LOST THE LICENSE, I HAD A PERPETUAL LICENSE BUT I NEED TO REACTIVATE AND WHEN I TRY IT  HOW TO SOLVE IT?

I configured Kepserver V7 to get data from Siemens S7-1200 using TCP/IP ethernet. I followed all the steps shown on this guide. https://support.ptc.com/help/kepware/drivers/en/#page/kepware/drivers/SIEMENSTCPIPETHERNET/HelpContents.html#However, I kept having error saying “Data block - ‘DB131’, block start = 0, block size =32, Reason = ‘Device returned protocol error’. Error class = 0x81, Error Code = 0x4.” I researched this error and I learned I needed to install TIA Portal Exporter installed to change .ap file to .tpe file. Then import the .tpe file to kepserver device. This resulted error saying “Error initializing the Openness API. Please verify all necessary components are installed”. I reinstalled TIA portal to verify openness is installed and it was installed. Please advise how I can resolve these issues.

I am trying to connect to KEPServerEX 6 from an EWON device.  I set up the security and got he message on the KEPServer log that the EWON was now trusted and could open a connection.When I tried to connect to browse for tags in the KEPServer, I received the error opcuaiosrv-Connect fail (BadCertificateHostNameInvalid)on the client side.After working on this for awhile, I noticed that the KEPServer certificate in the EWON repository was listed as being from the verbose computer name endpoint and I was trying to attach from the IP endpoint.Would this make a difference and if so, how do I generate a KEPServer certificate for the IP endpoint?  I don’t seem to be able to attach to the computer name endpoint with the EWON device.Or does this message mean something else?  The computer times are within a minute and security levels match.  The EWON doesn’t seem to allow no security connections, so I have no luck turning security off.

PLC type: Mitsubishi Fx5UEthernet Module: USR W630 (Wi-Fi to serial)The proposal PLC connects directly to Kepware through the Ethernet port and is working fine, and I want to try to connect through the Wi-Fi.My diagram is PLC - ethernet → USR W630 ))) Wi-Fi → Kepware.The purpose of the Ethernet module is to work like an Ethernet bridge. I follow this link to set up the PLC: https://industrialmonitordirect.com/blogs/knowledgebase/mitsubishi-fx5u-kepware-slmp-connection-configuration?srsltid=AfmBOop2S78y27FdOU68Ot9BDMhwFP3ieD8WG3x2a4zojZ9K_RskSMqR.In Kepware, I tried using the Mitsubishi Ethernet method to set up it, but it always shows that the reading is failing. I tried with this tutor. The problem is when I tried through Modbus TCP/IP to reading the PLC values. It looks like no problem, and I got the value of the PLC address. Does everyone have these problems, or any suggestions for my situation? Thank you first.

Hi,I have a question regarding ServerTimestamp and SourceTimestamp  from this post. Based on the OPC UA specification, if the device/PLC doesn't support hardware timestamping, shouldn't SourceTimestamp be null? However, on the client side, I noticed that SourceTimestamp is always equal to ServerTimestamp. Is there any documentation explaining why this happens? Furthermore, when I issue a Read request for a tag whose value hasn't changed, SourceTimestamp is still constantly updated and identical to ServerTimestamp. Any insights or references would be greatly appreciated!

As per the original post.   Hi,   I have the similar problem as NM_12850686. Could you please share the port issue solution?   Here is my setup: Cleco Controller mPro200 - Open Protocol - Port 9002 - Activated Cleco Controller mPro200 - TorqueNet- Port 12345 - Activated Cleco Controller mPro200 id : 192.168.50.20 KepServerEx - Channel:TorqueToolEthernet - Device:Cleco (Open Protocol - 192.168.50.20 - Port: 9002)   Both the controller and the port can be ping successfully from the PC.   However, none of the tags receives information from Cleco. Could you please look into this?   Thank you,LP

I have a OPC UA server (on a siemens comfort panel) that I want to read in some tags on my Kepware Server 7.1.271.0 server. I’ve set up an OPC UA channel and device, and I’m able to perform automatic tag generation tasks (I’m able to see the tags I have configured over there). The problem is that when I then try to read Kepware’s tags from this, the tag quality is bad. Maybe about once a minute I get a message in the log that the OPC UA Client driver is reconnecting due to connection loss- which sometimes, but not always corresponds to one momentary instance when the tag quality goes good and I’m able to read in the tags. The authentication is not using any security policy or message mode. I’m a bit flummoxed because I’m able to set up an Unified Automation OPC UA client that can read from the client just fine on the same machine as the Kepware server with the same settings. I did some debugging with Wireshark and saw that OPC traffic from that client to the panel was normal, while the

I am currently testing Kepware Server 7 to connect to an OPC Server via OPC DA.The OPC Server, in production, is currently has working OPC DA Client. I have configured the DCOM configuration for the Kepware Server.Set the Launch and Access Permission default and limits with the user that is also in the OPC Server as well as Access Permission. I can browse the tags but when OPC Quick Client (OQC) is connected to the Kepware, data is Bad and not updating. Here are what I observe during the testing:Data is updating:            Kepware Runtime “Use DCOM configuration” = disabled Data is not updating:      Kepware Runtime “Use DCOM configuration” = enabled Data is updating:            “My Computer” authentication level = None and “Use DCOM remote security” is enabled (connected directly to OPC Server) Data is not updating:      “My Computer” authentication level = Default/Connect and “Use DCOM remote security” is enabled. (connected directly to OPC Server)However, I tried to set the authent

Nonpaged Memory increase over timeI have trouble with linearly increasing “Nonpaged memory” allocation. I inspect the memory allocation with RAMMap. Our machines server system keeps getting slower and slower, so we started investigating.The picture above shows it: “Nonpaged memory” started at 776,088 KB after rebooting the HyperV. After that, it increased up by 5 GB in total.Our setup is:HyperV with Windows Server 2019; Host is Windows Server 2022.  On the HyperV: KEPServerEX 6.15 / V6.15.154.0 Omron FINS Ethernet (16 devices; CJ2 PLCs) Siemens TCP/IP Ethernet (1 device; S7-300) OPC UA Server as the connector to our SCADA system (Running on the same HyperV) In the second table, you can see that the memory allocation stops growing once I turn off Kepserver. There is one section where the memory doesnt grow even though the Omron acquisition is running. I think that in that case the time period is too short. Questions:Did you ever face a similar issue? Any ideas how to solve it? What sh

Hi. I want to use my s7 1500 as an OPC UA client over online connection. I am able to browse all OPC UA server tags, but I still can’t read the values. Note that I used OPC UA readlist instruction and the status is false for error, done or busy and the status itself shows 16#0070_0000.Please, assist me on what I might be doing wrong.

We are using 3 Kepware (KEPServerEX) servers connected to Azure IoT Operations (AIO) OPC UA Connector, which forwards data to Azure IoT Hub.Recently, we observed intermittent missing payloads/data gaps of approximately 4 minutes across all three Kepware servers simultaneously. During these periods, no telemetry was received in Azure.We raised a support case with Microsoft, and after analyzing the OPC UA Connector logs, they provided the following finding:Analysis of the OPC UA Connector logs shows that the payload gaps coincide with OPC UA BadTimeout publishing errors, i.e. periods where the OPC UA servers did not return a response to the connector's Publish requests within the operation timeout. During each of these periods no data-change or keep-alive notification is delivered, and therefore the per-minute keyframe for that period is not produced. This is the primary cause of the reported payload shortfall.We are trying to understand the issue from the Kepware/OPC UA Server side and

Is it possible to connect KepWare to a device that uses TCP socket communication? So, basically to send a command to the device (IP/port) and receive a string response?The device is Tettex 2293Command I’d like to send is ‘*IDN?’\r\nExpected response is a model and a serial number in a string.

We are having problems with two Kepware implementations reading differently.  Here are the specifics:  We have one server that has KepServerEX 6.  It reads one of our PLCs well; no problems.  We also have a new server with Kepware Server 7.  This implementation will not read from the exact same PLC.  It’s showing Bad in the OPC quick client.  Has anyone seen this before?

Hello,I have a customer with an older machine running KEPServerEX 5.0 who needs to transfer the software license to a new system.However, when attempting to use the license transfer process, an error occurs. We also noticed that the customer's Support & Maintenance expired around 2018. Even when trying to submit a support case, version 5.0 is not available as a selectable product, so we're unsure whether this is an expected limitation or a temporary issue.I have two questions:Q1. Does PTC still provide assistance for legacy products such as KEPServerEX 5.0, or is this likely just a temporary issue with the support portal?Q2. What is the recommended way to help the customer transfer the existing license? Is there still a process to transfer the license for an unsupported version? Or would the customer need to purchase Support & Maintenance again, or upgrade/purchase a new license? Any guidance or recommendations would be greatly appreciated.Thank you.

Experiencing intermittent communication failures across multiple devices on the Allen-Bradley ControlLogix Ethernet driver. Environment:Product: ThingWorx Kepware Server [version, e.g. 6.x — check Help → About] OS: [Windows Server version] Driver: Allen-Bradley ControlLogix Ethernet Affected devices: 1769-L23E-QBFC1 (CompactLogix 5323E), firmware revision 20.12, connected via embedded EtherNet/IP port, connection path <IP>,1,0 At least 6 devices affected across multiple channels (CH_3, CH_4, CH_9, CH_13, CH_14, CH_15, CF_2), IPs in the 10.16.70.x rangeSymptoms (from Event Log, 21/07/2026, 15:07–15:37):Warning: "The following errors occurred uploading controller project from device. Resorting to symbolic protocol." — repeating every ~10–15 seconds per device Warning: "Device is not responding. | ID = '<10.16.70.x>,1,0'." Warning: "Frame received from device contains errors." (device CH073, 10.16.70.114) Between failures, the driver successfully reads device identity (Details

Olá, estou com problema no kepserver ex 6.5 - atualmente tenho por volta de 44 data clients, porém o sistema após alguns dias de operação começa a me retornar com mais de 1000 clients, ocasionando no travamento do servido. Podem me ajudar ?  

This error caused the kepware to restart automatically and the OPC connection to Ignition was faulted.

We have KEPServerEX v6.17.269 installed in a pharmaceutical manufacturing environment and are planning to upgrade to v6.18.318 at the earliest.Before proceeding, we would like to understand any potential impact of this upgrade. Based on our assessment, we expect no impact on the existing project configuration and runtime operation. However, we would appreciate confirmation on the following points:1. OPC UA Certificate-Based CommunicationWe are currently using OPC UA certificate-based communication between KEPServerEX and connected systems.Could you please confirm:Will upgrading from 6.17.269 to 6.18.318 have any impact on the existing OPC UA certificates? Will the OPC UA server and client certificates remain unchanged after the upgrade? Is there any scenario during the upgrade where certificates are regenerated or reissued? If certificates are regenerated, will we need to re-establish trust relationships with all upstream and downstream OPC UA clients/servers connected to KEPServerEX?O

I Transferred a Perpetual License,License shows as ‘good’ in the license utility.License shows as ‘Active’ on the Kepware website.BUT KepserverEX is still showing a 2hr time limit, after which, it deactivates. License support expiry is 10/2019.I am uncertain what Kepserver version it was originally running on.Now running on Kepserver 6.18.318.0 QUESTIONS:Is this a Kepserver version issue? How do I see what version of kepserver my licenses need?Or has Kepware made it so you can't transfer older licenses without paying?

Hi all,A few years back I had a use case where I wanted to use the kepware configuration API to create and modify advanced tags from thingworx. Does anyone know if this functionality has been added or is in the future plans to be developed?