4 - 6 750/760 FEEDER MANAGEMENT RELAY – COMMUNICATIONS GUIDE
MEMORY MAP CHAPTER 4: MODBUS MEMORY MAP
Memory Map
The 750/760 memory map is shown in the following table.
Table 2: Memory Map Organization
Memory Map
Section
Address Range Description
Product ID 0000h to 007Fh Identification and revision information.
Commands 0080h to 00FFh
Substitute command locations. Read and
write access.
User Map 0100h to 01FFh
User Map Values and Addresses. See the
previous section for details.
Actual Values 0200h to 0FFFh Actual values data. Read Only.
Setpoints 1000h to 1FFFh Setpoints data. Read and Write.
Event Recorder,
Trace Memory, and
Data Logger
2000h to 2FFFh
See relevant sections in this chapter for
details.
Reserved 3000h to 3FFFh Reserved for future use.
Factory Service
Data
4000h to FFFFh Reserved.
Table 3: Modbus Memory Map (Sheet 1 of 40)
ADDR DESCRIPTION RANGE UNITS TYPE DEFAULT
PRODUCT ID (read only)
0000 GE Multilin Product Device Code --- --- F1 ---
0001 Hardware Revision 1 to 26 --- F13 ---
0002 Software Revision --- --- F14 ---
0003 Version Number 000 to 999 --- F1 ---
0004 Bootware Revision --- --- F14 ---
0005 Installed Options --- --- F15 ---
0006 Serial Number (4 words) --- --- F33 ---
000A Date Of Manufacture (2 words) --- --- F23 ---
000C
13
Installed Option: Harsh Environment --- --- F96 ---
ETHERNET OPTIONS
10
(read/write)
0040 IP Address --- --- F91
000.000.000.000
0048 IP Subnet Mask --- --- F91 255.255.255.000
0050 IP Default Gateway --- --- F91
000.000.000.000
COMMANDS (read/write)
0080 Command Operation Code --- --- F19 0
0081
1
Simulate Front Panel Key Press --- --- F55 ---
0088
14
Communications Port Passcode (4 words) --- --- F33 00000000
VIRTUAL INPUTS (read/write)
0090 Reserved
1 2 3 4 5 6 7 8 9 10 11 12 13
For explanation of Table footnotes, see the Memory Map Notes at the end of this table.
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