Siemens ISGS SG8158-00 User Manual download pdf (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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