Seneca KEY-C Series User Manual page 25

TARGET MODBUS START REGISTER ADDRESS
Defines the starting register of the TAG to be acquired by the Modbus RTU slave.
TARGET MODBUS REQUEST TYPE
Select the type of Modbus register:
Coil
Discrete Input
Holding Register
Input Register
TARGET REGISTER DATA
Select the type of TAG variable:
16 BIT UNSIGNED: 1 Modbus register, from 0 to 65535
16 BIT SIGNED: 1 Modbus register, from -32768 to +32767
32 BIT UNSIGNED MSW: 2 Modbus registers, whose Modbus register with the lower address contains the most
significant word, can assume values from 0 to 4294967295
32 BIT UNSIGNED LSW: 2 Modbus registers, whose Modbus register with the lower address contains the least
significant word, can assume values from 0 to 4294967295
32 BIT SIGNED MSW: 2 Modbus registers, whose Modbus register with the lower address contains the most
significant word, can assume values from -2147483648 to +2147483647
32 BIT SIGNED LSW: 2 Modbus registers whose Modbus, register with the lower address contains the least
significant word, can assume values from -2147483648 to +2147483647
FLOAT MSW: 2 Modbus registers, whose Modbus register with the lower address contains the most significant
word, single precision floating point value (IEEE 758-2008)
FLOAT LSW: 2 Modbus registers, whose Modbus register with the lower address contains the least significant
word, single precision floating point value (IEEE 758-2008)
BIT: 1 Boolean Coil or Discrete Input, value true or false.
N.B. This field is automatically filled in if a Seneca slave device has been selected in the "TARGET MODBUS
DEVICE" field.
All 32-bit values are stored in 2 consecutive registers, for example:
The 32-bit unsigned MSW TAG 1 Totalizer is stored in the addresses 40016 and 40017:
The most significant word is 40016, the least significant is 40017.
So the 32bit value is obtained from the following relationship:
Tag setup can be imported/exported from/to a ".cgi" file:
Note that a .cgi file can also be imported/exported from/to the Excel template.
It is also possible to add, modify, delete or move a tag.
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BE REPRODUCED WITHOUT PRIOR PERMISSION.
User Manual
ATTENTION!
1 = (40017) + ( (40016) × 65536)
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MODBUS TO CLOUD
"KEY-C" GATEWAYS
MI00725-1-EN
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