Tech Fred

MrPLC Member
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Everything posted by Tech Fred

  1. cant some one explain my problem fx2n modbus

    The response is a single byte. You should be getting back a response with 10 data bytes 3 header bytes and 2 trailing check sum bytes. Similar to the following: [01h] [03h] [0Ah] [00h] [01h] [00h] [02h] [00h] [03h] [00h] [04h] [00h] [05h] [24h] [CFh]
  2. OPC Communications

    The OPC Client that is connected to the OPC Server will tell it the rate that it wants updates sent to it. The industry standard is one second. Now, if the barcode scanner is sending the barcode to the OPC Server unsolicited, that means the server is not sending a request to scan to the scanner, Then you can probably set the update rate in the client to something faster because the server is just sending what it has in cache to the connected OPC Client.  What is the server and the client that is being used. That will allow us to refine our recommendations to you.
  3. Connect PLC to Kepserver

    Get a serial to Ethernet converter  and use the Ethernet Encapsulation Option in the Modbus Serial Driver to connect to the Modbus device. That leaves you Serial port on the PC open.
  4. Simatic TI315 DR

    Well the TI405 were re-branded Koyo (Direct Logix)405 series controllers and the TI 305 is the re-granded Koyo(DL 305). The TI 505 were Texas Instrument controllers, that is where TI comes from. You should be able to use Automation Directs Direct Soft software to program it.
  5. You have the device in the server configuration set to simulated mode. This forces the Server to do a loop back on the device and you are now only reading from cache and not going out to the device at all. If you were to write to a tag you would see the value returned in the client but it would not be written to the physical device just to the cache that is allocated for that tag. Un-check that setting and you should start talking to the device. it the device is not responding you will get an error in the server for that. You may also want to consider updating to a newer server version. V4. is no longer sold or supported by Kepware/PTC.
  6. MX OPC Server DA/UA

    Most likely the problem is with DCOM. OPC DA uses DCOM for security so you have to make sure that the user running the DA client has access and launch privileges with the DA Server. We have found over the 20 plus years that we have been dealing with DCOM that you can have 2 PC's configured with the exact same OS image and that you can get an OPC DA connection on one PC and not the other. This is one of the many reasons so many people are adopting OPC UA over DA. It has better security and you do not have to deal with DCOM. Check with the DA client or sever vendors should have documentation their DCOM recommendations. The OPC Training Institute has some good resources for this as well.
  7. Mitsubishi & Omron -OPC-UA - KEPWARE Server

    No, None of the Devices yu have listed have an OPC UA Server Embedded on them. If they have Ethernet ports on them you would be able to connect to them with drivers in KEPServerEX However Serial Protocols typically only allow one master connection and that is the HMI's in your configuration. If the HMI's have the ability to server their data then you might be able to connect to the HMI's using one of the Kepware Client Drivers, this allows KEPServerEX to become and OPC DA/UA/XMLDA/DDE/Wonderware Intouch bridge. I would recommend contact Kepware and talking to one of the Sales Application Engineers and they can help you determine what you can do. No support contract is needed to talk to them.
  8. OPC data

    Greetings,  Are you manually adding the item request or did you browse to the UA  Server in the S7-1500 and Generate the item that you want to read from the dievice? Did the ATG succeed? What version of the server are you using? We do have a lot of users that are doing this successfully. Have you contacted Kepware Technical Support about this?
  9. Check your power settings. The USB port is most likely powering down.
  10. MicroLogix 1400

    So, if you are doing an OPC DA connection to RSLinx on the Windows 10 PC you may be getting impacted by the Meltdown and Spectre Vulnerabilities that Microsoft sent security updates out. These would have happened on or after 1/3/2018. These updates broke most OPC Classic processing. Microsoft release updates to these to fix the breaks last Friday. 
  11. To Infinity

    Have you tried a Double Precision Float. It will get a higher value range and greater precision. I know that the logix controllers support the type.
  12. KepserverEX has the Datalogger plug-in for logging data. This can be done with several different triggers. For accessing the SQL data the ODBC Client driver can be used. That driver has the ability to connect to a stored procedure, supply some inputs and get a single line response. You can also do a query from it to get data. Contact Sales@kepware.com and took to one of the sales application engineers and they can walk you through the entire process and answer any questions.
  13. S7 300 to Ignition

    There is not gateway functionality in the Siemens controller so you will have to get the data from PLC1 into PLC 2.
  14. You will need to do an OPC connection to the gateway. Remote DDE connections (NetDDE) are no longer supported by Microsoft. To do OPC DA or UA from Excell or access you are going to need and add-in for Excel. Try OPC Labs.com this is not free like DDE is though. I believe that Matrikon also has a solution as well.
  15. The Automation wrapper is quite old and no longer supported by the OPC Foundation. Your best bet is to get an OPC Client SDK that allows you to develop an OPC Client in VB.Net or C#. There are several of them out there. ClientAce from Kepware (http://www.kepware.com/Products/OPC_ClientAce.asp) Unified Automation (http://www.unified-automation.com/products/client-sdk.html) TechnoSoftware (https://opcfoundation.org/products/view/85)
  16. FX3U-485ADP-MB communication

    So you must have a Modbus Driver or server that is talking to the FX3u through the cable. Is the FX3u writing data do the HMI through that driver or server or is the HMI sending poll request to the FX3U. In the first case the FX3u is a master and the driver or server is a slave and it will not know that there has been a problem because it is just waiting for the master to say something. In the second case the HMI (driver/server) is the master and it should report a communiciatons failure. I suspect you are configure like the first case. In that type of configuration you should have a watchdog item that is coming from the FX3U that you know will change at a specific rate and use that to indicate that comms has failed.
  17. Ethernet/IP and FINS together

    You should be able to because they use different ports. It is just a matter of configuring both interfaces.
  18. Maximum range for Float data type in FX series

    32 bit FLoat 1.17549 x10^-38 to 3.40282 x 10^38 with a 6 digit precision. 64 bit Floate 2.22507 x10^-308 to 1.79769 x 10^308 with a 15 digit precision. You can find this with a quick Google search and it is a standard.
  19. No the legacy server does not support that model. The 1100 was not released to Market when development was stopped on the Version 4.x server
  20. OPC server

    What is the OPC Server you are using? Did you configure the FactoryTalk View table with an OPC Connection and add the items from the OPC Server to the table?
  21. Kepware/OPC Networking L3

    OPC is what an OPC Client uses to communicate to an OPC Server. It is straight device communications to the PLC's. You should be able to talk to any device as long as the Subnet allows the addresses and routing is enabled via the switch. That is what should be checked in this configuration. You can also contact Kepware for additional help.
  22. PLC data to PC

    You should be able to connect to the PLC via an OPC Server and from there a client application can get the data and log it. KEPServerEX has a plug-in that is an internal client and can log data. it is called data logger. http://www.kepware.com/Products/OPC_Data_Logger.asp
  23. Modbus Ascii

    If you are reading from the same starting register and the same number of registers every time then it will never change and you can hard code it. If either the starting register or number of registers changes then it needs to be calculated every time.
  24. managed or unmanaged?

    If you are already running Building Automation on the same network I would use managed switches. Chances are there are already ones being used. That advantages of being able to control access to network segments and to set up virtual networks will be invaluable as you expand the system. The other advantage is for your IT department. They can monitor the network health and identify issues related to network traffic. They are going to give you the most room for growth.
  25. If your are talking directly to the sensors what is your update interval? Are the Serial Or Ethernet communications? If serial what is the baud rate? What is line distance? If Ethernet are you talking to the devices in a Synchronous manner like with serial connections or are you talking to them simultaneously? The more detailed the information you can provide us on your configuration the better able we will be to help you.