Siemens ISGS SG8158-00 - Manual (Page 47)

Control & Communications
Siemens Energy & Automation, Inc. 41
6.12 Communications Port
The Configure Communications Port function lets the user
change the communications parameters for the ISGS relay.
The ISGS relay can connect at 2400, 4800, 9600, and
19,200 baud at both ports (7201 and 7202). Higher baud
rates will improve response and update rate, but slower PCs
may lose characters due to the high rate. Both ports can be
operated at different baud rates and simultaneously.
The Parameter Change function can be enabled or disabled.
When enabled, this function allows the remote change of the
parameter sets (A or B).
The Comm Events function can be enabled or disabled
(7204). When enabled, this function allows remote activation
of the breaker and binary outputs. The function can be dis-
abled to prevent remote access during service periods or as
a general security measure. For more information on Comm
Events, refer to Section 6.5.
The Local Address parameter (7207) can be changed by
entering a value from 1 to 254 to assign the local SEAbus
address. Make sure that the new address does not represent
a duplicate address of another device connected to the
communications loop.
6.13 Passwords
The Configure Passwords function allows the change or dis-
play of the three passwords. This function requires your old
password before you can access the individual parameters.
All passwords can consist of one to five digits.
Only the level 3 password (7303) can set all passwords. Use
this level if you intend to change all passwords. Level 1 and
level 2 passwords (7301 and 7302) can be displayed and
changed by entering the respective level password.
7200 Configure Communications Port
Address Parameter Options
7201 Local Port (front) 2400, 4800, 9600, 19,200 baud
7202 System Port (rear) 2400, 4800, 9600, 19,200 baud
7203 Parameter Change Enabled or Disabled
7204 Comm Events Enabled or Disabled
7207 Local Address 1-254
7300 Configure Passwords
Address Parameter Range
7301 CW-Level 1 1 to 5 digits
7302 CW-Level 2 1 to 5 digits
7303 CW-Level 3 1 to 5 digits
A lower level password does not allow you to scroll to a
higher level password parameter. But the higher level pass-
word always lets you move to the lower level(s). For example,
entering the level 2 password allows you to view and change
the passwords for level 2 and level 1, but the same password
does not provide access to view or change the level 3 pass-
word.
6.14 Date and Time Setting
The Date and Time Setting function sets the date and time of
the ISGS relay to match it with other connected devices and
to provide an accurate setting for event and trip information.
The Current Date parameter (8101) displays the present date
and time on the clock in the ISGS relay. The date and time is
used to stamp the event and trip logs.
The date can be changed with the Set Date parameter
(8102). To enter the date, separate the month, day, and year
with a decimal point. Each field must contain two digits with
the exception of the year field which must contain four digits
(mm.dd.yyyy).
The time can be changed with the Set Time parameter
(8103). To enter the time, separate hours, minutes, and sec-
onds with a decimal point. Each field must contain two digits
(hh.mm.ss).
Note: The clock in an ISGS relay is not a real-time
clock. It has no battery backup and will drift
over time.
If the relay is connected to an ACCESS system, the supervi-
sory software used for this system, for example, WinPM,
reads all relays and synchronizes their clocks. If the relay is
not connected to an ACCESS system, date and time should
be set periodically, at least once a day, for accurate event
and trip information. Date and time must always be reset
after a loss of control power.
When reading events, the time can be off as much as 10 ms
because events (inputs) are not interrupt driven; they are
polled about every 10 ms. Binary inputs are also slower than
protective functions; events can be reported later even if they
occurred earlier.
8100 Date and Time Setting
Address Data Range
8101 Current Date 01/01/1970 00:00:00
8102 Set Date mm.dd.yyyy
8103 Set Time hh.mm.ss
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