Siemens 7SR242 - Operating Mode; Control Mode; Real Time Clock; Table 6-1 Operation Mode

7SR242 Duobias Description Of Operation
©2010 Siemens Protection Devices Limited Chapter 1 Page 51 of 52
6.5 Operating Mode
The relay has three operating modes, Local, Remote and Out of Service. The following table identifies the
functions operation in each mode.
The modes can be selected by the following methods:
SYSTEM CONFIG>RELAY MODE setting, a Binary Input or Command
Table 6-1 Operation Mode
OPERATION REMOTE MODE LOCAL MODE SERVICE MODE
Control
Rear Ports Enabled Disabled Disabled
Fascia (Control Mode) Disabled Enabled Disabled
USB Disabled Enabled Disabled
Binary Inputs Setting Option Setting Option Enabled
Binary Outputs Enabled Enabled Disabled
Reporting
Spontaneous
IEC Enabled Enabled Disabled
DNP Enabled Enabled Disabled
General Interrogation
IEC Enabled Enabled Disabled
DNP Enabled Enabled Disabled
MODBUS Enabled Enabled Disabled
Changing of Settings
Rear Ports Enabled Disabled Enabled
Fascia Enabled Enabled Enabled
USB Disabled Enabled Enabled
Historical Information
Waveform Records Enabled Enabled Enabled
Event Records Enabled Enabled Enabled
Fault Information Enabled Enabled Enabled
Setting Information Enabled Enabled Enabled
6.6 Control Mode
This mode provides convenient access to commonly used relay control and test functions. When any of the items
listed in the control menu are selected control is initiated by pressing the ENTER key. The user is prompted to
confirm the action, again by pressing the ENTER key, before the command is executed.
Control Mode commands are password protected using the Control Password function – see Section 6.9.
6.7 Real Time Clock
The relay stores the time and date. The time and date are maintained while the relay is de-energised by a back
up storage capacitor.
The default date is set at 01/01/2000 deliberately to indicate the date has not yet been set. When editing the
Time, only the hours and minutes can be edited. When the user presses ENTER after editing the seconds are
zeroed and the clock begins running.
Time and date can be set either via the relay fascia using appropriate commands in the System Config menu or
via: