Fluid Components International ST100 Series Modbus - Manual (Page 7)

ST100 Series Modbus Operation
Fluid Components International LLC 3
Process Data - Table 1, cont.
Process Variable Values - Integral Registers
Variable / Parameter Modbus Slave Register Data Type Access
Flow MS (VALUE) 4101 SPECIAL1 READ
Flow LS (VALUE) 4102 SPECIAL1 READ
Temperature MS (VALUE) 4103 SPECIAL1 READ
Temperature LS (VALUE) 4104 SPECIAL1 READ
Totalizer MS (VALUE) 4105 SPECIAL2 (D) READ
Totalizer MS2 (VALUE) 4106 SPECIAL2 (D) READ
Totalizer LS2 (VALUE) 4107 SPECIAL2 (D) READ
Totalizer LS (VALUE) 4108 SPECIAL2 (D) READ
Pressure MS (VALUE) 4109 SPECIAL1 READ
Pressure LS (VALUE) 4110 SPECIAL1 READ
Totalizer Value - Single Precision Floating Point (16 bits)
Variable / Parameter Modbus Slave Register Data Type Access
Totalizer 1 MS (VALUE) 4111 FLOAT READ
Totalizer 1 LS (VALUE) 4112 FLOAT READ
Totalizer 2 MS (VALUE) 4113 FLOAT READ
Totalizer 2 LS (VALUE) 4114 FLOAT READ
Process Variables - Engineering Unit Codes
Variable / Parameter Modbus Slave Register Data Type Access
FLOW ENG. UNITS CODE 4020 INTEGER READ
TEMP ENG. UNITS CODE 4021 INTEGER READ
TOTALIZER ENG. UNITS CODE 4022 INTEGER READ
PRESSURE ENG UNITS CODE 4023 INTEGER READ
Instrument Status Codes
Variable / Parameter Modbus Slave Register Data Type Access
DEVICE (SENSOR 1) STATUS CODE #1 4025 INTEGER READ
DEVICE (SENSOR 1) STATUS CODE #2 4026 INTEGER READ
Note: (D) indicated double precision (64 bits)
NOTE: DATA TYPE “SPECIAL 1”: This is a collection of discrete registers that contain a single precision (32 bit)
floating point value, and must be treated and interpreted as a single precision floating point number by
the DCS or the PLC.
DATA TYPE “SPECIAL 2”: This is a collection of discrete registers that contain a double precision (64 bit)
floating point value, and must be treated and interpreted as a double precision floating point number by
the DCS or the PLC.