Register Scaling Investigated - ABB TPU2000 Technical Manual

TPU2000/2000R Modbus/Modbus Plus/ Modbus TCP/IP Automation Guide
msb
Word Data MSW
Byte 0 Byte 1
Register Offsets of Signed/Unsigned Long
Register Offsets of Signed /Unsigned Integers
Register Offsets of Signed/Unsigned Short
Register Offsets of ASCII Characters
The TPU2000 and TPU2000R support the following data return types for 4X formats:
•
Unsigned Short
•
Signed Short
•
Unsigned
• Signed
•
Unsigned Long
• Signed Long
•
ASCII
The tables contained within this document reference the above definitions and give the cadence of bytes or words
as:
•
MSB
•
LSB
• MSW
•
LSW
• msb
•
lsb

Register Scaling Investigated

Within ECP and WinECP, the Change Settings Mode must be entered. A selection titled "Register Configuration"
will appear to the operator. Within ECP, a screen as depicted in Figures 5-26 and 5-27 appears allowing
configuration of any of the 32 available registers.
lsb msb
Word Data LSW
Byte 2
Word Data
Byte 0
0 Byte Data
Byte 0
ASCII Char ASCII Char
Byte 0
- 8 bits - 1 byte in 1 word - Range 0 to 255
- 8 bits - 1 byte in 1 word - Range -128 to +127
- 16 bits - 2 bytes in 1 word - Range 0 to + 65,535
- 16 bits - 2 bytes in 1 word - Range -32,768 to 32,767
- 32 bits - 4 bytes in 2 words - Range 0 to +4,294,967,295
- 32 bits - 4 bytes in 2 words - Range -2,147,483,648 to +2,147,483,647
- 16 bits - 2 bytes in 1 word 2 characters per register (Reference Appendix B)
Most Significant Byte
Least Significant Byte
Most Significant Word
Least Significant Word
Most Significant Bit
Least Significant Bit
lsb
Byte 3
Byte 1
Byte 1
Byte 1
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