Operation
X-320M™ User's Manual
Function codes, memory types, and addresses can be converted to the PLC addressing equivalent
using the table below. To use the table, look up the row corresponding to the Modbus function code.
Then take the desired X-320M™ feature address and add to it the address offset in the PLC address
mode column.
Input A PLC Base Address = PLC Address
For example, to read holding registers 1 and 2 (Wind Speed)
Regsiter Address
1296
PLC Base address
40001
PLC Address
41297
Programming the PLC to read 2 registers from 41297 will return the value of the Wind Speed sensor.
Code Name
Modbus
Function
X-320 Addresses
Data Type PLC Address
Mode 485
PLC Address
Mode 584/984
Holding Registers
(Read Only)
03
1296-1322
(Sensors 1-9)
32-bit float Addr + 4001
Addr + 40001
1324-1344
(Calculated Values and
Highs/Lows)
32-bit float Addr + 4001
Addr + 40001
For 32-bit numbers, two registers must be read starting at the desired address, examples of each are
given for the applicable functions.
3.4.3 X-320M™ Full Address Table
The table below gives commonly used function codes, memory types, data sizes, and equivalent PLC
addresses for accessing the X-320M™. The data size will be the same regardless of the addressing
mode.
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Xytronix Research & Design, Inc.
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