ProSoft Technology MVI56-104S - Manual (Page 34)

MVI56-104S ♦ ControlLogix Platform Configuring the MVI56-104S Module
IEC 60870-5-104 Server Communication Module User Manual
Page 34 of 188
ProSoft Technology, Inc.
November 18, 2009
2.4.8 w (latest ack threshold)
1 to 20
This parameter must match that of the host unit and specifies the number of
messages the module will receive before sending an S-format sequence
acknowledge message when no I-format data is ready to send. It is
recommended to set this value to 2/3 the value of k.
2.4.9 Time DB Offset
-1 or 0 to 3994
This parameter sets the location in the database where the module’s current date
and time will be copied to.
Note: The following tables lists the 12 byte, data area placed in the database if the Time DB Offset
parameter is set to a value other than -1:
Byte Length Range Description
0 to 1 2 0 to 59,999 Seconds and milliseconds
2 1 0 to 59 Minutes
3 1 0 to 23 Hour
4 1 Reserved
5 1 1 to 31 Day of the Month
6 1 1 to 12 Month
7 to 8 2 0 to 65,535 Year (four digit format, for example 2005)
9 1 Reserved
10 1 0 or 1 Invalid Flag (0 = Valid, 1 = Invalid
11 1 Reserved
2.4.10 Error Offset
0 to 3980
-1 to disable
This parameter sets the location in the module’s internal database when the
status and error information for the server will be stored. Enter a valid database
address of 0 to 3980 to store the information, or enter -1 to disable.