Modbus Map SOLECTRIA XGI 1500 (Rev A)
DOCR-XXXXXX
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Modbus Overview
2
Registers can be read using Modbus function code three (3) and certain registers can be written with Modbus
function code six (6). When reading or writing to a group of registers, such as reading a string, make sure that
the read command starts at the lowest address of the group and is of the appropriate length size for the
group.
Value, Scale Factor, and Units
2.1
Many registers use a scale factor to communicate the value as an integer. The scale factor and units explain
how the value is read. See Equation 2.1 as an example of how to interpret the result of reading Address 40075,
as shown in Table 2.1.
Table 2.1 - Example of Value, Scale Factor, and Units
Address
Size
Name
Value
Type
Units
Scale factor R/W Description
40075
1
AphC
-
uint16
A
A_SF
R
Phase C AC current
40076
1
A_SF
-1
uint16
-
-
R
Scale factor - AC current
Equation 2.1 - Example of Applying Value, Scale Factor, and Units
𝑃ℎ𝑎𝑠𝑒 𝐶 𝐴𝐶 𝐶𝑢𝑟𝑟𝑒𝑛𝑡 = 𝑉𝑎𝑙𝑢𝑒 (𝐴𝑑𝑑𝑟𝑒𝑠𝑠 40075) ∗ 10
−1
𝐴
Read/Write
2.2
The R/W column determines whether a value is read-only (R), write-only (W), or read-write (RW). Only write
to W or RW registers.
XGI1500 Smart Grid Features
3
The XGI1500 firmware provides several grid support features to help maintain grid stability and reliability.
These features can either be activated, deactivated or updated via web-based GUI or using software which
supports Modbus TCP/IP.
