dm_modbus_set_serial_mode Function

public function dm_modbus_set_serial_mode(modbus, mode) result(rc)

Sets the Modbus RTU serial mode to RS-232 or RS-485. This API function is only supported on Linux kernels 2.6.28 onwards.

The function returns the following error codes:

• E_INVALID if the mode is invalid.
• E_MODBUS if setting the serial mode failed.
• E_NULL if the Modbus context is not associated.

Arguments

Type	Intent	Optional	Attributes		Name
type(modbus_type),	intent(inout)			::	modbus	Modbus type.
integer,	intent(in)			::	mode	Modbus RTU mode (MODBUS_RTU_RS232, MODBUS_RTU_RS485).

Return Value integer