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For each variable, it describes:
• Collection method: used by the gateway to collect the data.
• Processing method: average, instantaneous, parameter or alarm.
• Formatting: name, unit and scaling coefcient.
This le must be made available to the gateway on the FTP server.
By convention, the lename has the following format:
prexID_MODBUS_deviceName.ini, where “prexID” corresponds to the gateway identier and
“deviceName” corresponds to the name of the device.
A single le may be used for many devices that behave in exactly the same way.
The le contains two declaration tables:
• The declaration table for Modbus requests, named “Modbus_RequestsTables”. Each entry in
this table is dened by 10 elds separated by semicolons.
FIELD DESCRIPTION
index Index for the request, from 1 to N
name Designation of the Modbus request
readFunctionCode Read function code and function sub-code: 0 to 65535
Standard codes handled:
1 => “read coils”
2 => “read discrete inputs”
3 => “read holding registers”
4 => “read input registers”
writeFunctionCode Write function code and function sub-code: 0 to 65535
Standard codes handled:
5 => “write single coils”
6 => “write single register”
15 => “write multiple coils”
16 => “write multiple registers”
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