Schneider Electric TSXCUSBMBP user manual Explicit, Direct, Implicit

Configuring the TSXCUSBMBP Driver

1. Explicit	The Explicit Addressing process is described as follows:
Addressing	z Explicit Addressing is used whenever the Modbus ID in a message received
	through the Virtual Serial Port is present in the Modbus Routing Table, regardless
	of what range of values the Modbus ID falls into. In Explicit Addressing, the
	routing path will be the one that was entered into the Modbus Routing Table for
	the Modbus ID of the received message.
	z Any value can be selected for the Modbus ID as long as it does not conflict with
	any Modbus IDs currently used by the application for Direct Addressing or Implicit
	Addressing. However, it is helpful for each Modbus ID to have some
	correspondence in value to the Modbus Plus node that it will be used to access.
	z If no Modbus Plus node addresses are duplicated in the network (same
	Modbus Plus node address used on more than one local network if separated by
	Bridge Plus devices), the Modbus IDs to use for Explicit Addressing can be the
	actual Modbus Plus node addresses.
2. Direct
	The Direct Addressing process is described as follows:
Addressing	z If the Modbus ID in a message received through the Virtual Serial Port is not
	present in the Modbus Routing Table and it is in the range of 1-64, the
	TSXCUSBMBP Driver will use Direct Addressing.
	z In Direct Addressing, the Modbus ID of the received message is used directly as
	the 1st byte of the routing path, and the remaining 4 bytes are set to 0.
	z For example, a Modbus ID of 2 would be routed to [2.0.0.0.0], and a Modbus ID
	of 45 would be routed to [45.0.0.0.0]
3. Implicit
	The Implicit Adressing process is described as follows:
Addressing	z If the Modbus ID in a message received through the Virtual Serial Port is not
	present in the Modbus Routing Table and it is in the range of 80-255, Implicit
	Addressing will be used.
	z When the TSXCUSBMBP driver uses Implicit Addressing, it divides the Modbus
	ID of the received message by 10. The quotient is used as the 1st byte of the
	routing path, the remainder is used as the 2nd byte of the routing path, and the
	remaining 3 bytes are set to 0. For example, a Modbus ID of 87 would be routed
	to [8.7.0.0.0], and a Modbus ID of 230 would be routed to [23.0.0.0.0].

28 35011984 02/2006