Contents
Thermo Fisher Scientific
Model 42
i
Trace Level Instruction Manual
xiii
Measurement Configuration .............................................................B-31
Hardware Configuration ...................................................................B-34
Communications Configuration .......................................................B-38
I/O Configuration.............................................................................B-42
Record Layout Definition .................................................................B-46
Format Specifier for ASCII Responses............................................B-47
Format Specifier for Binary Responses ...........................................B-47
Format Specifier for EREC Layout.................................................B-48
Text ............................................................................................B-48
Value String ................................................................................B-48
Value Source ...............................................................................B-48
Alarm Information ......................................................................B-49
Translation Table........................................................................B-49
Selection Table............................................................................B-49
Button Designator.......................................................................B-49
Examples.....................................................................................B-50
MODBUS Protocol ............................................................................................C-1
Serial Communication Parameters ..................................................... C-1
TCP Communication Parameters ...................................................... C-2
Application Data Unit Definition ...................................................... C-2
Slave Address................................................................................... C-2
MBAP Header ................................................................................ C-2
Function Code ................................................................................ C-3
Data ................................................................................................ C-3
Error Check .................................................................................... C-3
Function Codes.................................................................................. C-3
(0x01/0x02) Read Coils / Read Inputs ............................................ C-3
(0x03/0x04) Read Holding Registers / Read Input Registers ........... C-5
(0x05) Force (Write) Single Coil..................................................... C-7
MODBUS Parameters Supported ...................................................... C-8
Geysitech (Bayern-Hessen) Protocol .......................................................... D-1
Serial Communication Parameters ..................................................... D-1
TCP Communication Parameters ...................................................... D-2
Instrument Address ............................................................................ D-2
Abbreviations Used ............................................................................ D-2
Basic Command Structure ................................................................. D-2
Block Checksum <BCC> ................................................................... D-3
Geysitech Commands ........................................................................ D-3
Instrument Control Command (ST)............................................... D-3
Data Sampling/Data Query Command (DA).................................. D-4
Measurements reported in response to DA command ..................... D-6
Single Range Mode ...................................................................... D-6
Dual/Auto Range Mode............................................................... D-6
Appendix C
Appendix D
