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8903/IM 8903/IP Ethernet Communications Interfaces
Always select Holding Register for both 16-bit and 32-bit data types.
DO NOT SELECT
“Holding Registers (32-bit)”.
To write to the first Input variable declared in DSE, the Register number (Element) is set to
00001. To write to the second variable declared in DSE, the Register number is 00002 if the
first Input variable is a 16-bit data type or 00003 if it is a 32-bit data type.
To read the first Output variable declared in DSE, the Register number is set to 00257. To read
the second variable declared in DSE, the Register number is 00258 if the first Output variable is
a 16-bit data type or 00259 if it is a 32-bit data type.
If variable is SINT16 or UINT16, select Data Type “Word as Word”. If variable is SINT32 or
UINT32, select Data Type “Word as Long”. If variable is REAL, select Data Type “Word as
Real”.
