Table 15 - Mt100 Modbus Process Data - FCI MT100 Installation, Operation And Maintenance Manual

OPERATION
increments by 1 every time the group 1 registers reach the 65,535.996 count or the set "Totalizer Max Limit" count. TOTALIZER 2 has a
maximum count of 4,294,967,295, after which it resets back to zero.
The TOTALIZER 1 group maximum count value can be set to a lower value of the default value by the user. This is controlled by service
registers 4115 and 4116 for which values above 65,535.996 are not permitted. The default value of 65,535.996 for TOTALIZER 1 provides
a resolution 0.01 to the MT100 Totalizer value.
������������������ ( �������� ) = ������������������ 2 ���������� × ������������������ 1 ������ ���������� + ������������������ 1 ����������
To reconstruct the double precision floating point value of the Totalizer using the single precision floating point registers do the following:
Process Variable Values – Daniel Extension
Process Variable Values – Integral Registers
Totalizer Value – Single Precision Floating Point (16 Bits)
Process Variables – Engineering Unit Codes
Instrument Status Codes
Device (Sensor 1) Status Code #1
Device (Sensor 1) Status Code #2
Notes: 1. (D) indicates double precision (64 bits).
2. Data Type: Special1 is a collection of discrete registers that contain a single precision (32-bit) floating point value,
3. Pressure variable is not applicable to the MT100.
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Table 15 – MT100 Modbus Process Data
Variable/Parameter
Flow (Value)
Temp (Value)
Totalizer (Value) MS
Totalizer (Value) LS
Pressure (Value)
3
Variable/Parameter
Flow MS (Value)
Flow LS (Value)
Temperature MS (Value)
Temperature LS (Value)
Totalizer MS (Value)
Totalizer MS2 (Value)
Totalizer LS2 (Value)
Totalizer LS (Value)
Pressure MS (Value)
3
Pressure LS (Value)
3
Variable/Parameter
Totalizer 1 MS (Value)
Totalizer 1 LS (Value)
Totalizer 2 MS (Value)
Totalizer 2 LS (Value)
Variable/Parameter
Flow Eng. Units Code
Temp Eng. Units Code
Totalizer Eng. Units Code
Pressure Eng Units Code
3
Variable/Parameter
and must be treated and interpreted as a single precision floating point number by the DCS or the PLC. Special2 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.
Modbus Slave Register
5101
5102
5103
5104
5105
Modbus Slave Register
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
Modbus Slave Register
4111
4112
4113
4114
Modbus Slave Register
4020
4021
4022
4023
Modbus Slave Register
4025
4026
MT100 Multipoint Flow Meter
Data Type Access
Float Read
Float Read
Float (D) Read
1
Float (D) Read
1
Float Read
Data Type Access
2
Special1 Read
Special1 Read
Special1 Read
Special1 Read
Special2 (D) Read
1
Special2 (D) Read
1
Special2 (D) Read
1
Special2 (D) Read
1
Special1 Read
Special1 Read
Data Type Access
Float Read
Float Read
Float Read
Float Read
Data Type Access
Integer Read
Integer Read
Integer Read
Integer Read
Data Type Access
Integer Read
Integer Read
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