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Model 4500 MkIII
Opacity and Dust Monitor
User Guide
Read-Write Registers
Modbus
Register
Data Value
Description
Range
Scaling
201
Average during audit
0 = Off
1 = On
NA
202
Initiate Calibration
Bit 0 = Cal check
Bit 1 = Cal audit
NA
95
Cal check interval
In hours (Default = 24)
0 - 1000
NA
96
Time to next cal
Time to next cal in minutes
0 - 65535
NA
Note
A Read operation on an unassigned Register will return a zero, rather
than an exception.
Some status conditions can also be accessed as Modbus coils. Refer to the
Model 4500 MkIII Modbus guide for more details
Summary of Contents for 4500 MKIII
Page 4: ...Opacity and Dust Monitor User Guide Model 4500 MkIII Preface Blank...
Page 6: ...INTRODUCTION A...
Page 29: ...A 23 Model 4500 MkIII Opacity and Dust Monitor User Guide A4 3 Mounting the AFU APS I O...
Page 41: ...GETTING STARTED B...
Page 42: ...Opacity and Dust Monitor User Guide Model 4500 MkIII Preface Blank...
Page 76: ...THEORY OF OPERATION AND APPLICATION C...
Page 86: ...SYSTEM SPECIFICATION D...
Page 91: ...MAINTENANCE E...
Page 108: ...CHANGING THE INSTALLATION PATHLENGTH F...
Page 113: ...INSTRUMENT RECORD SHEETS G...
Page 114: ...Blank...
Page 117: ...OPTIONAL I O MODULES FOR AFU H...
Page 118: ...Blank...
Page 124: ...LONG PATHLENGTH OPTION App 1...
Page 126: ...Opacity and Dust Monitor User Guide Model 4500 MkIII App 1 2...