Memory Map Organization - GE Multilin 850 Communications Manual

MEMORY MAP ORGANIZATION

Memory Map Organization
NOTE:
12-2
User Map Address
User Map Address 9,10
User Map Address 11, 12
User Map Address 13,14
User Map Address 15,16
User Map Address 17,18
User Map Address 19,20
User Map Address 21,22
User Map Address 23,24
User Map Address 25,26
User Map Address 27,28
The 8 Series relay supports 32-bit Modbus items to be configured in the user map. When
such an address is configured in the user map for example at user map address 1, user
map address 2 is also consumed by the same item irrespective of the address assigned in
address 2.
The 8 Series relay Memory Map describes all the data registers that can be accessed via
serial communications. The Memory Map address range is grouped into several categories
as outlined in the following table. All memory map locations are two byte (16 bit) values.
The remaining pages of this chapter list all locations of the Memory Map. Addresses for all
locations are shown in hexadecimal. Consult the range, step, units, and the data format
(listed after the memory map) to interpret register values.
Many Modbus drivers add 40001 (for settings) or 30001 (for actual values) to the actual
address of the register addresses. For example, if settings address 0h was to be read, then
40001d would be the address required by the Modbus communications driver; similarly, if
settings address 320h (800d) was to be read, then 40801d would be the address required
by the Modbus communications driver.
Table 12-2: Memory Map Organization
Memory Map Section Address Range
Product ID 30001 to 30079
Actual Values 30241 to 30308
30660 to 35559
User Map Values 30524 to 30648
Setpoints 40001 to 40008
40230 to 40303
40692 to 102866
Commands 40129 to 40140
User Map Setpoints 40524 to 40648
CHAPTER 12: ABOUT THE MODBUS MEMORY MAP
Description
Virtual Input Status 1-32
Virtual Output Status 1-32
Remote Input 1-32
Remote Output 1-32
Ia
Ib
Ic
In
Iavg
Ig
Description
Identification and revision information.
Actual values. Read Only.
User Map Values. See the previous section for
details.
Setpoints data. Read and Write.
Substitute command locations. Read and write.
User map setpoints. Configures user map
values
8 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE
Modbus Address
30714 30715
30718 30719
30728 30729
30736 30737
31270 31271
31272 31273
31274 31275
31278 31279
31295 31296
31276 31277