ProSoft Technology MVI69-101S - Manual (Page 109)

Reference MVI69-101S ♦ CompactLogix or MicroLogix Platform
IEC 60870-5-101 Slave Communication Module
ProSoft Technology, Inc. Page 109 of 149
March 16, 2009
Some of the command points may be configured to be selected before executed.
The following illustration shows a typical command communication between the
master and module during unbalanced operation with a SELECT operation.
Refer to the following parameter to configure the select/operate timeout period.
After the module receives the SELECT operation it will wait for this period of time
for the EXECUTE operation. If the module does not receive an EXECUTE
operation within this period of time it will require another SELECT operation
before the EXECUTE operation.
Select/Operate Timeout : 20000 #Milliseconds before select
#timeout
Command Points Addressing
As discussed before, the command points must be configured in a database area
that is updated at the module. You must associate each point to a database
address in the MVI69-101S module. The interpretation of this parameter depends
on the point type configured.
C_SC_NA and C_DC_NA
The single-point command and dual-point command points use one bit with bit-
addressing. For example, if you configure the following points:
# Monitor Monitor Require
# Point # DB Address Point # DB Addr Select
# ------- ---------- ------- ------- -------
START
100 1600 0 0 0
101 1601 0 0 0
102 1602 0 0 0
END