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Found 2 results

  1. Hello togehter, I use a V1210 for my Visualisation Project of digital pressure transmitters. They are working with RS485 BUS and their own Protocol (Meriam Serial Protocol). In first test i tried to get the information how to Request via RS485 a new Measurement signal and in which format the transmitter is answering in a Response Frame. In this Case i already know that i have to send on RS485 Bus /11920Baud 8 Data Bits 1 Stop Bit Parity: None the following Frame(hex): 80 01 00 05 0B 04 92 00 00 00 06 10 05 80 80 0B F0 40 Answer: 40 01 20 0B 05 04 92 00 00 00 7D 9D 00 02 03 00 F9 4E 4A 41 C1 5E 58 BD 1B 3B 5E 41 00 01 01 00 E9 60 B6 41 91 DE B5 41 52 07 BB 41 0B F0 40 05 80 80 In the marked 4 Byte-little Endian Code is the Pressure of my transmitter shown. HEX: F9 4E 4A 41 Float - Little Endian (DCBA) : 12.64428 How can I implement such a Request Frame and how can I manage the Answer frame for visualisation of the pressure value? I already setted up a Protocol Config and a PROTOCOL Send - in the Protocol Send Block. But after closing and reopening the Code is missing?! Looking forward hearing from you soon. Kind Regards Alexander   
  2. I'm developing SCADA graphics, and was just supplied with an address list from the PLC programmer. After looking over manuals/webinars/forum posts I'm looking to get some verification on whether I got the Modbus addressing correct or not. This is my first experience having to interface with an Unitronics PLC... I'm used to AB or SCADAPacks mostly...
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