GE 750 Guide

CHAPTER 4: MODBUS MEMORY MAP DATA FORMATS NOTES
750/760 FEEDER MANAGEMENT RELAY – COMMUNICATIONS GUIDE 4 - 65
Data Formats Notes
1. New for version 2.10
2. Changed from version 2.00 to 2.10
3. New or changed for version 3.00
4. New or changed for version 3.20
5. New for version 3.30
6. New for version 3.31 MOD 010
7. New or changed for version 3.60
8. New or changed for version 3.70
9. New or changed for version 4.00
10. New for version 7.00
11. New for version 7.40
12. To read a date, read two 16-bit values and interpret these two values using format
F23. The first value provides the month and day and the second value provides the
year.
To read a time, read two 16-bit values and interpret these two values using format
F22. The first value provides the hours and minutes and the second value provides the
milliseconds.
F95
11
Floating Point (32 bits)
IEEE 754 single precision binary floating-point format: binary32.
The first modbus address contains the sign bit, exponent, and 7 most significant bits of the fraction.
The second modbus address contains the 16 least significant bits of the fraction.
F96
13
Order code: Harsh Environment option
0x000 No indication.
0x002A No conformal coating.
0x0055 Indicates conformal coating for harsh environment.
0x00FF No indication.
Other values Reserved for future use.
Table 4: Data Formats (Sheet 20 of 20)
Type Value Description
1 2 3 4 5 6 7 8 9 10 11 12 13
For explanation of footnotes, see notes of end of Table.
Table 5: Example Date and Time Interpretation
Example
Modbus
Address
Format Example Value
(hexadecimal)
Interpretation Result
Date of
last trip
02E0 F23 first 16 bits 081D Month = 08
Day = 1D
August 29
02E1 F23 second 16 bits 07DD Year = 07DD 2013
Time of
last trip
02E2 F22 first 16 bits 0F3B Hour = 0F
Minute = 3B
3:59 pm
02E3 F22 second 16 bits 87CC Milliseconds = 87CC 34.764 seconds

GE 750 Specifications

General

Brand	GE
Model	750
Category	Relays
Language	English