Modbus protocol functions supported by this Driver are described next.

Reading functions

•01: Bit Reading (Read Coil Status - 0x)

•02: Bit Reading (Read Input Status - 1x)

•03: Word Reading (Read Holding Registers - 4x)

•04: Word Reading (Read Input Registers - 3x)

•07: Status Reading (Read Exception Status)

•20: File Record Reading (Read File Register - 6x)

Writing functions

•05: Bit Writing (Force Single Coil - 0x)

•06: Simple Word Writing (Preset Single Register - 4x)

•15: Bit Writing (Force Multiple Coils - 0x)

•16: Word Writing (Preset Multiple Registers - 4x)

•21: File Record Writing (Write File Register - 6x)

Detailed information about each one of these functions can be found on Modbus protocol's specification, available for download at Modbus Organization's website.

In addition to protocol's standard functions, as already stated, this Driver also implements special functions, not defined by the protocol, usually related to mass memory readings. A list of all supported special functions can be checked on topic Special Functions. A complete configuration of this Driver is described on topic Configuration.

If users want to add support to a new function in this Driver, please contact Elipse Software's sales department.