![]() I like the serial tester you show above however, way out of my economic reach. I am not having much luck getting the two to talk, using Modbus and RS485 connection/protocol. ![]() I am trying to integrate a Yokogawa temperature control with a RedLion HMI. I realize this is an old thread however, it is new to me. A pure JavaScript implemetation of MODBUS-RTU (and TCP) master for NodeJS this is a forked version in the original version, the parser only check. The CAS Modbus RTU parser can analyze a Modbus RTU message and tell you if there are any errors in the message, what type of messages it is, what data is being. It has both very good capture utilities and very good decoding features for a wide variety of network protocols, including the Allen-Bradley protocols I use the most.įor Modbus RTU on RS232 or RS485, I strongly recommend Frontline Test Equipment's SerialTest: ![]() The best network analysis software I have used is Frontline Test Equipment's NetDecoder software. For most Modbus applications, I just use an ordinary serial capture tool like HHD or Docklight, and decode the Modbus commands manually or with the Chipkis Modbus parser.
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