Recent content by Wasan

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    Citect SQL Problem

    Maybe you should change from '" +RealToStr(value,10,1) + "' to " + value + "
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    Modbus TCP Connection to Remote Virtual Server

    Maybe you should config IP Address in VMWare to have same loop as PLC. Then change VMWare network setting to use bridge mode.
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    Siemens PLC Integration to an IOT Device

    Maybe you should use SIEMENS IOT2040 that can communicate with S7 PLC or Modbus TCP connection and can be use with Node-Red that can communicate with MQTT for IoT device.
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    Looking to Learn About Automation

    You should check at this site there are many PLC courses. Some coursee may be suit with your application. https://www.udemy.com/courses/search/?src=ukw&q=plc
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    RTU to ASCII

    It depends on PLC that you use. i.e. Mitsubishi FX series there are FNC200 STR Instructions to convert binary data to ASCII string.
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    MODBus Memory Mapping

    They are up to manufacturer design. If they need it they can use holding registers for read/write discrete or analog value. I have seen some devices use 4xxxx address for read only words, but for discrete I have never seen before. But I think if they use 4xxxx for boolean means if data is Off...
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    Modbus TCP and Citect SCADA 6.10

    For download driver please check this link. https://www.citect.aveva.com/news/177-driverweb/503-modnet
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    Modbus TCP and Citect SCADA 6.10

    You should find MODNET to use Modbus TCP driver. Maybe this link help you. http://proscada.ru/ctkbase.en/articles/q5331.html
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    Citect Scada 2016

    For your question I describe as 1. If you use OFS OPC server I have heard that there are same problem as yours maybe you should update your OFS version. 2. Please go to graphic builder select Tools and use Update Pages then compile project again. If you still have error you should check...
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    Connecting to Rayleigh Meter Using Modbus

    Maybe you should check this manual I think it should compatibility with your model and they are use 32 bit float register to read. https://www.rayleigh.com/media/uploads/RI-F384-G_Ver_01_2015_02_GB.pdf
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    Conversion of MODBUS Slave Output to Analogue 4-20mA

    You need to use PLC or HMI to receive data from TEC24 as shown in link below at page 56. https://www.rmg.com/wp-content/uploads/2017/05/ec24_manual_en_01.pdf Then scale data from 4000 to 20000 (4 -20 mA) at register 40015 to 40018 of DAT3024 as shown at page 3...
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    MODBUS Wrong Register Value

    I sorry for did wrong.I check manual that as David_2 said Room Temperatrue are multiply with 50 to correct value. https://www.manualslib.com/manual/825024/Siemens-Rdf302.html?page=39
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    MODBUS Wrong Register Value

    I think that modbus address that you monitor are 32 bit floating point but by default Modscan monitor in 16 bit Integer. You should go to Setup -> Display Options -> Floating Pt to display address in 32 bit floating point.
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    Android Program to Connect to AB, Siemens, Schneider PLC

    Today there are many android apps that can create mobile SCADA, but almost use Modbus TCP. If you can create mobile app that can communicate with multi protocol (Ethernet IP, Profinet), it is advantage for you.
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    Is the Module Index Equivalent to Modbus Slave Id?

    Maybe I describe unclearly for your question. "Is module index 3 an industry standard or its vendor specific?" It is vendor specific. (Most devices use slave ID 1 but some use other ID).
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