Delta RMC151 - Manual (Page 1041)

9 Register Reference
The Modbus address is calculated according to the following equation:
Modbus RTU Address = 2 x [(256 x file) + element] + 1
where the RMC IEC addressing format is %MDfile.element
Examples:
%MD12:3 = 2 x [(256 x 12) + 3] + 1 = 6151
%MD9:56 = 2 x [(256 x 9) + 56] + 1 = 4721
Low Address Range
In addition to the standard Modbus register map, which is calculated from the IEC
register map as described above, the RMC70 and RMC150 duplicate some Modbus
registers to lower address ranges. Some PLCs do not address high enough to access
critical data. The lower addresses allow all PLCs to access RMC data.
Low Address
(RMC70 and
RMC150) Description
Corresponds to
RMC70 Address Corresponds to
RMC150 Address
1-511 Indirect Data Map %MD18.0-255 %MD42.0-255
513-1023 Indirect Data Map Definition %MD17.0-255 %MD41.0-255
1025-1535 Commands %MD25.0-255 %MD40.0-255
1537-3583 Variables - Current Values %MD56.0-
%MD59.255
%MD56.0-
%MD59.255
Modbus Address Sections
For your convenience, the starting registers of each register section are given below:
Description
RMC70
IEC
File
RMC70
Starting
Modbus
Address
RMC150
IEC File
RMC150
Starting
Modbus
Address
Duplicate: Indirect Data Map - 1 - 1
Duplicate: Indirect Data Map Definition - 513 - 513
Duplicate: Commands - 1025 - 1025
Duplicate: Variables - Current Values - 1537 - 1537
Controller Info 7 3585 7 3585
Axis Status Registers 8-11 4097 8-23 4097
Axis Parameter Registers 12-15 6145 24-39 12289
Command Area - Small (RMC70) 16 8193 - -
Command Area (RMC150) - - 40 20481
Indirect Data Map Definition 17 8705 41 20993
Indirect Data Map 18 9217 42 21505
Axis Assignment 19 9729 43 22017
Controller Parameters/Status 20 10241 44 22529
Communication Configuration 21 10753 45 23041
Event Log Configuration 22 11265 46 23553
Discrete I/O 23 11777 47 24065
Task Status 24 12289 48 24577
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