CAS Modbus RTU Parser	ScreenShots
Have you ever needed to analyze a Modbus RTU message? The CAS Modbus RTU parser can analysis 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 written or read from your device, what device the message came from, and more... Features: Check for errors in Modbus RTU messages. Analyze messages in a human readable forum. Analyze raw hex data messages Free. (No email required)	Zoom in

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Modbus RTU message:
        [0b] [17] [00] [04] [00] [06] [00] [0f] [00] [03] [06] [00] [ff] [00] [ff] [00] [ff] [ab] [cd]

Frame Analysis
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The frame has no errors.

Poll Analysis
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Device Address  = 11      = 0x0b
Function        = 23      = 0x17 = Read or Write 4x Registers
Read Point Addr = 40005    
Read Qty        = 6       
Write Point Addr= 40016    
Write Qty       = 3       
	Write Data: Point Address  =40016   Value =255  =0x00ff 
	Write Data: Point Address  =40017   Value =255  =0x00ff 
	Write Data: Point Address  =40018   Value =255  =0x00ff 
        

• CAS Modbus RTU Parser v1.00gD (13 Aug 2009)

• CAS Modbus RTU Parser v1.00fA (19 May 2005)
  • Corrected: some numbers intended for printing in hex were printing decimal
  • Corrected: If both poll and response selected then both poll and response are analysed. Previsouly not.
  • Corrected: If poll or response are exceptions then this is now recognized and printed correctly.
  • New: Can process client or server log files.
    • All lines containing 'TX :' or 'RX :' are processed as poll/response pairs.
    • For client files: TX indicates a poll and Rx indicates a reponse
    • For server files: TX indicates a response and Rx indicates a poll
    • Output is written to a file.
  • New: Screen output can now be copied to copy-buffer by click of a button
  • New: Checksum validation is done during frame validation phase.
  • Corrected: Sample message has valid checksum
  • Corrected: Auto update will now download the new installer instead of sending you to a webpage to download the new version.