dm_modbus_read_uint32 Function

public function dm_modbus_read_uint32(modbus, address, value) result(rc)

Reads 4-byte unsigned integer from input or holding register, depending on the address, and returns result in value. Stores the 4-byte unsigned value in a 8-byte signed integer. If the address is not in input register or holding register range, it is interpreted as a holding register address.

The function returns the following error codes:

  • E_BOUNDS if argument n is larger than size of data.
  • E_INVALID if argument address is invalid.
  • E_MODBUS if reading the registers failed.
  • E_NULL if the Modbus context is not associated.

Arguments

Type IntentOptional Attributes Name
class(modbus_type), intent(inout) :: modbus

Modbus RTU/TCP type.
integer, intent(in) :: address

Address to read from.
integer(kind=i8), intent(out) :: value

Value read from register.

Return Value integer


Calls

proc~~dm_modbus_read_uint32~~CallsGraph proc~dm_modbus_read_uint32 dm_modbus_read_uint32 interface~dm_to_signed dm_to_signed proc~dm_modbus_read_uint32->interface~dm_to_signed proc~dm_is_error dm_is_error proc~dm_modbus_read_uint32->proc~dm_is_error proc~dm_modbus_read_int32 dm_modbus_read_int32 proc~dm_modbus_read_uint32->proc~dm_modbus_read_int32 proc~dm_uint16_to_int32 dm_uint16_to_int32 interface~dm_to_signed->proc~dm_uint16_to_int32 proc~dm_uint32_to_int64 dm_uint32_to_int64 interface~dm_to_signed->proc~dm_uint32_to_int64 proc~dm_modbus_read_int32->proc~dm_is_error proc~dm_modbus_get_int32_from_int16 dm_modbus_get_int32_from_int16 proc~dm_modbus_read_int32->proc~dm_modbus_get_int32_from_int16 proc~dm_modbus_read_input_registers dm_modbus_read_input_registers proc~dm_modbus_read_int32->proc~dm_modbus_read_input_registers proc~dm_modbus_read_registers dm_modbus_read_registers proc~dm_modbus_read_int32->proc~dm_modbus_read_registers proc~dm_modbus_get_int32_from_int16->interface~dm_to_signed modbus_read_input_registers modbus_read_input_registers proc~dm_modbus_read_input_registers->modbus_read_input_registers modbus_read_registers modbus_read_registers proc~dm_modbus_read_registers->modbus_read_registers