ProSoft Technology MVI69-103M - Manual (Page 88)

MVI69-103M ♦ CompactLogix or MicroLogix Platform Reference
IEC 60870-5-103 Master Communication Module
Page 88 of 131 ProSoft Technology, Inc.
November 3, 2008
In this version of the module, the warm and cold boot processes perform the
same operation as many of the variables that must be initialized are fixed when
the module first boots and cannot be changed after the application starts.
Cold Boot Block (9999)
Block 9999 performs a cold-boot operation on the module. The format of the
block constructed by the processor is as follows:
Offset Description Length
0 9999 1
1 to n Spare n
where
n = 60, 120, or 240 depending on the Block Transfer Size parameter (refer to the
configuration file).
In this version of the module, the warm and cold boot processes perform the
same operation as many of the variables that must be initialized are fixed when
the module first boots and cannot be changed after the application starts.
5.2.2 Master Driver
The master driver supported on each application port of the module emulates an
IEC 60870-5-103 Master device. Configuration of each port is independent and
should be connected to different serial networks.
Each port on the module communicates with one or more controlled stations on
what are referred to as sessions. A session represents a controlled device with a
unique data link layer address. Each session (controlled device) contains one or
more data sets (sectors) that are defined by the vendor of the device. The
following illustration shows these relationships.