ProSoft Technology 5205-104S-PDPS - Manual (Page 37)

Protocol Implementation 4205/5205-TS-104S-PDPS ♦ ProLinx Standalone
IEC-60870-5-104 to PDPS Communication Module with Time Stamp
ProSoft Technology, Inc. Page 37 of 128
July 12, 2007
If the Use IP List parameter is set to 1 (Yes), the module will only accept a
connection from one of the three IP addresses listed in the example above. The
following illustration shows that the Server will accept a connection from Client A,
whose address is on the list, but will reject a connection from Client B, whose
address is not on the list.
Common ASDU Address
At the application level, the module is identified by the Common ASDU
(Application Service Data Unit) Address. This address must match the CASDU
sent by the client unit. An ASDU is a data unit that transfers information objects
between the client and the server.
If the client sends a message to a different Common ASDU, the module ignores
the command. To configure the Common ASDU Address for the 4205/5205-TS-
104S-PDPS module, use the following parameter in the configuration file:
Common Address of ASDU : 1 #Range 0 to 65535
2.1.2 Monitor Direction and Control Direction – Point
Definition
The protocol specification defines two directions of data: monitor direction and
control direction.
Monitor Direction:
The direction of transmission from the server to the client
Control Direction:
The direction of transmission from the client to the server