1766-RM001A-EN-P MicroLogix 1400 Programmable Controllers ...

530 Recipe and Data LoggingInformation for Creating Your Own ApplicationController Receives Communications PacketCommand StructureDST SRC CMD 0f STS TNS FNC A2 Byte Size File No. File Tpe Ele. No. S/Ele. No.Table 4:Field Function DescriptionDSTDestination NodeSRCSource NodeCMDCommand CodeSTS Status Code Set to zero (0)TNS Transaction Number Always 2 bytesFNCFunction CodeByte Size Number of bytes to be read Formatted string length (see equation below)File Number Always set to zero (0)File TypeMust be A5 (hex)Element Number Queue number Determines the queue to be read (0…255)Sub/Element Number Always set to zero (0)EquationRecord Field 1+ Record Field2+ Record Field3… + Record Field 7 = FormattedString LengthRecord Field SizesData TypeWordLong WordDate FieldTime FieldFloatStringMaximum Size7 bytes (characters)12 bytes (characters)11 bytes (characters)9 bytes (characters)14 bytes (characters)90 bytes (characters)NOTEThe formatted string length cannot exceed 109 bytes in length.Publication 1766-RM001A-EN-P - October 2008