Appendix H - Creation of new Modbus field device / TRL/2 Field Device
Part No.: 4417584_Rev12 Configuration Manual
CIU 888 H - 51
16-bit decimal
float
Bit 15 : sign
Bit 14..11 : Exponent power of 10
Bit 10..0 : Mantissa
Value = -1 sign * mantissa * 10 (Exponent - 7)
Range : -1023*E7 to +1023*E7
12-bit signed
integer
Bit 15..13 : Not used
Bit 12 : 0 – Positive
1 – Negative
Bit 11..00 : Value 0 to 4095.
If the sign is negative, the value is shown in 2’s complement.
Range : -4095 to +4095
32-bit signed
integer
The data represents an signed integer.
Range : + 2147483648 to – 2147483647
32-
bit float (regular)
32 Bit IEEE floating point in TWO registers.
All floating point data is coded into 4 Bytes Floating point.
This format allows a representation of finite numbers from
negative to positive 3.402823 *E38
Range : -3.402823*E-38 to +3.402823*E38
32-bit uint/f1 Most significant 16 bits represent integer data and least
significant 16 bits is 0.
Range : 0 to 65535.5
32-bit uint/f10 Most significant 16 bits represent integer data and least
significant 16 bits represents 1 fraction digit.
Range : 0...65535.95
32-bit uint/f100 Most significant 16 bits represent integer data and least
significant 16 bits represents 2 fraction digits.
Range : 0...65535.995
32-bit uint/f1000 Most significant 16 bits represent integer data and least
significant 16 bits represents 3 fraction digits.
Range : 0...65535.9995
32-bit uint/
f10000
Most significant 16 bits represent integer data and least
significant 16 bits represents 4 fraction digits.
Range : 0...65535.99995
Char This data represents an ASCII character.
8-bit signed
integer
This data represents an 8-bit signed data.
Range : -127 to 128
Modbus Data
Type
Description
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