Taie FY100 Communications Manual
Also see for FY100: Operation manualOperation manual
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5 MODBUS ASCII ProtocolFY400/600/700/800/900 COMMUNICATION MANUAL 75 MODBUS ASCII Protocol5.1 Message ConfigurationHeader(:)1 ByteID Number2 Byte(Function Code)2 ByteData2N ByteLRC2 ByteDelimiter(CR+LF)2 Byte5.2 ID Number(Slave Address)Range: 1~255Master instrument identifies slave controllers by the ID Number of the requestedmessage. ID Number should be configuring in individual slave controller by settingparameter “IDNO” in operation LEVEL 3.5.3 Function CodeFunction Code Contents03 (30H 33H) Reading multiple registers value from slave controller(Max register count : 8)06 (30H 36H) Setting 1 register value to slave controller16 (31H 30H) Setting multiple registers value to slave controller.(Max register count : 8)5.4 DataData depends on function code.Request message from Master instrument is include “register address”, “data count”and “setting data”.Response data from Slave controller is include “byte count”, “data” and “abnormalcode”.5.5 Error Check LRCLRC generation step is as below:①. Convert all the messages to RTU mode (HEX code)。②. Add all the values from “ID Number” to the end of “Data”. This is assumed asY(8Bit).③. Calculate 2’s complement with Y.④. Convert Y to ASCII characters (16 bit)⑤. LRC=Y |
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