Recent content by apa

Search Forums New Posts
  1. A

    Tatsuno Dispensing Pump Protocol

    For those who prefer C language: #include <stdio.h> #include <stdint.h> #include <string.h> #include <ctype.h> // Calculate Kermit CRC-16 (CCITT polynomial 0x1021) with reversed polynomial 0x8408 uint16_t calculate_kermit_crc(const uint8_t *data, size_t length) { uint16_t crc = 0; for...
  2. A

    Fuel Dispenser Real-Time Data Integration – Help Needed

    It seems that on Ebay you can find what you need: https://www.ebay.com/sch/i.html?item=162942860907&rt=nc&_trksid=p4429486.m145687.l2562&_ssn=psxrepairs
  3. A

    Why are most SCADA systems so heavy for small installations?

    Google translation: In many small industrial installations, we only need: - 20-100 devices - Modbus TCP/RTU - location visualization - alarms - data collection and storage systems. However, most SCADA systems are designed for large enterprises. We have developed a lightweight SCADA architecture...
  4. A

    Can Modpoll display comm with two TCP servers?

    Sorry, I realized you mean the Modbus Poll program found here: https://www.modbustools.com/download.html I downloaded it, installed and ran two instances of mbpoll.exe program. From each instance I can connect to a different modbus TCP server.
  5. A

    Can Modpoll display comm with two TCP servers?

    If you mean the program found here: https://www.modbusdriver.com/modpoll.html You need to open two Command Prompt windows and enter the commands in each window: modpoll.exe -m tcp 10.20.30.40 modpoll.exe -m tcp 10.20.30.41
  6. A

    Tatsuno Communication protocol

    It seems that on Ebay you can find what you need: https://www.ebay.com/sch/i.html?item=162942860907&rt=nc&_trksid=p4429486.m145687.l2562&_ssn=psxrepairs
  7. A

    İnvt modbus rtu start stop problem

    There is also the guide link: https://plc247.com/invt-goodrive-20-modbus-rtu-via-modbus-poll/ where it says: In order for the INVT GD20 inverter to communicate with Modbus-RTU RS485, we need to set the following parameters: P00.01 = “2” (Motor Control via RS485) P00.06 = “8” (Frequency...
  8. A

    İnvt modbus rtu start stop problem

    Hi, please watch this video about Modbus Poll & INVT GD20 VFD Modbus-RTU via RS485
  9. A

    İnvt modbus rtu start stop problem

    Hi, I have found the manual here: https://www.invt.com/uploads/file1/20231009/INVT%20GD27%20Series%20Smart%20VFD%20Manual_V1.1.pdf There is a note on page 142: Note: Some parameters in the preceding table are valid only after they are enabled. For example, for the running or stop operation, you...
  10. A

    How to convert the Modbus-RTU to MQTT ?

    Hi, you can convert modbus RTU to MQTT with IndigoSCADA, the SCADA can act as protocol converter: https://sourceforge.net/projects/indigoscada/ The MQTT paylod is encoded as Sparkplug B, not JSON.
  11. A

    Need IEC61850-MMS Client Simulator Tool to test the communication with IEC61850-MMS Server IED

    Here is a free useful tool: https://sourceforge.net/projects/iedexplorer/
  12. A

    NMEA to modbus TCP

    Here is another converter: https://www.adfweb.com/home/products/NMEA2000_Modbus.asp?frompg=nav6_8
  13. A

    Ge WorkstationST opc da to Third-party opc da client

    Here is a discussion about using WorkstationST OPC DA Server: https://control.com/forums/threads/workstationst-opc-da-server.46510/
  14. A

    Ge WorkstationST opc da to Third-party opc da client

    Here is another interesting link: https://honeywellprocess.my.site.com/opcsupport/s/article/How-is-my-MatrikonOPC-Server-for-MarkVVI-connecting-to-the-turbine-Ref-KB-513
  15. A

    Ge WorkstationST opc da to Third-party opc da client

    Hi, please check these two links: https://www.matrikonopc.com/opc-drivers/opc-mark-vi-direct/base-driver-details.aspx https://www.matrikonopc.com/opc-drivers/491/index.aspx
See more
Top