Memory Map; Modbus Memory Map - GE 735 Instruction Manual

4.3 MEMORY MAP

4.3 MEMORY MAP
The data stored in the 735/737 is grouped as actual values and setpoints. Setpoints can be read and written by a master
computer. Actual values can only be read. All setpoints and actual values are stored as two byte values. That is, each
address listed in the memory map is the address of a two byte value. Addresses are listed in hexadecimal. Data values
(setpoint ranges, increments, etc.) are listed in decimal. Consult the units, step and range as well as format tables following
the memory map for interpretation of register values.
Table 4–1: 735/737 MODBUS MEMORY MAP (Sheet 1 of 2)
GROUP ADDR
PRODUCT ID 0000
0001
0002
0003
0004
↓
4
000F
MONITORED 0010
DATA
0011
0012
0013
0014
0015
0016
0017
0018
0019
↓
001F
PRE-TRIP 0020
DATA
0021
0022
0023
0024
0025
0026
0027
0028
0029
4-10
DESCRIPTION
GE product device code
GE product hardware revision code
GE product firmware revision code
GE product modification file number
Reserved
↓
Reserved
Phase A current
Phase B current
Phase C current
Ground current
Relay Status Register
Output relays
Not used
LEDs
Bargraph
Not used
↓
Not used
Phase A pre-trip current
Phase B pre-trip current
Phase C pre-trip current
Ground pre-trip current
Cause of last trip
Last OC trip time
Cause of second last trip
Cause of third last trip
Cause of fourth last trip
Cause of fifth last trip
735/737 Feeder Protection Relay
4 MODBUS COMMUNICATIONS

4.3.1 MODBUS MEMORY MAP

RANGE STEP UNITS
25, 26 --- ---
1 to 26 --- ---
1 to 255 --- ---
0 to 1000 --- ---
--- --- ---
↓ ↓ ↓
--- --- ---
0 to 2000 1 % CT
0 to 2000 1 % CT
0 to 2000 1 % CT
0 to 2000 1 % CT
--- 1 ---
--- --- ---
--- --- ---
--- --- ---
--- --- ---
--- --- ---
↓ ↓ ↓
--- --- ---
0 to 2000 1 % CT
0 - 2000 1 % CT
0 to 2000 1 % CT
0 to 2000 1 % CT
Bits --- ---
0 to 65000 1 ms
Bits --- ---
Bits --- ---
Bits --- ---
Bits --- ---
FOR- FACTORY
MAT DEFAULT
F1 25=735,26=737
F1 4=D
F3 01, 00 = 1.0
F1 0 = no mod
--- ---
↓ ↓
--- ---
F1 ---
F1 ---
F1 ---
F1 ---
F101 ---
F103 ---
--- ---
F105 ---
F106 ---
--- ---
↓ ↓
--- ---
F1 ---
F1 ---
F1 ---
F1 ---
F113 ---
F115 ---
F113 ---
F113 ---
F113 ---
F113 ---
GE Power Management