Rockwell Automation 1395 ControlNet Communication Board - Manual (Page 53)

3–39 Configuration & PLC Interfacing
Publication 1395–5.37– March, 1999
Block #2: This Block contains data samples 34 through 66 for the
trend buffer specified in the PMW instruction.
BTR Instruction Length: 38 words
MSG Size in Elements: 38
PLC Message Read
0
Header
Word 39
0
Function Code
270
See Note
Header
Word 40
Header
Word 41
Header
Word 42
Data
Word 43
Data
Word 44
2
Data Sample
#34
Data
Word 45 Data Sample
#35
Data
Word x
–
Data Sample
#66 Data
Word 76
Data Samples – The data samples are
specified in Drive Units and may need
to be scaled by the PLC Controller prior
to being used in the program.
Block #3: This Block contains data samples 67 through 99 for the
trend buffer specified in the PMW instruction.
PMR Instruction Length: 38 words
PLC Message Read
0
Header
Word 77
0
Function Code
270
See Note
Header
Word 78
Header
Word 79
Header
Word 80
Data
Word 81
Data
Word 82
2
Data Sample
#67
Data
Word 83 Data Sample
#68
Data
Word x
–
Data Sample
#99 Data
Word 104
Data Samples – The data samples are
specified in Drive Units and may need
to be scaled by the PLC Controller prior
to being used in the program.