Clear Exception Pushbutton Operation - CTI Janus 2500C-J Series Installation And Operation Manual

5.3 Clear Exception Pushbutton Operation

When enabled, the C
LEAR
configuration values to default values, or restore factory defaults without requiring access to Janus Workbench or
the controller web server. In cases where the user selected password(s) for web server access is lost, this is the
only method that can used to clear existing passwords. No universal or developer-embedded "back door"
password is allowed in the system. All pushbutton operations are logged in the controller event log. The CLEAR
EXCEPTION pushbutton will function only when Switch 3 is in the CLOSED (ON) position.
The following actions may be initiated by depressing the C
•
C E
LEAR XCEPTION
Pressing and holding the recessed pushbutton for greater than 5 seconds causes the Janus controller to
reset and return to normal operation following a System Exception.
When the button is pressed for one second, the front panel display shows countdown for 'seconds to
controller reset' (4-1). If the pushbutton is released any time during this period, the operation is aborted.
If the button remains pressed until the countdown reaches zero, the display changes to rE (indicating
pending reset). Releasing the button at this time initiates the controller reset.
If the controller is in RUN or LOGIC STOP state when the C
must be halted before the reset is triggered.
The controller startup operation following the reset is specified by Operation following Module Reset
setting in C
ONFIGURATION
•
R C
ESET ONFIGURATION
Pressing and holding recessed pushbutton for greater than 10 seconds causes the controller to reset,
returning all configuration settings to their default settings.
The following settings are reset by this action:
•
Startup Mode
•
Alphanumeric Display Options
•
Method for Setting IP Address
•
IP Address / Subnet Mask (all configured)
•
Web Server Password Protection Enable and associated Username/Password List
•
PLC Clock Time Set / Sync Method and associated settings
After the button is pressed and held for 5 seconds, the display will show rE (see C
description above). If the button press is maintained for another second, the front panel display shows
countdown for 'seconds to C
period until countdown reaches zero, the button press is treated as a C
above.
If the button press is held until the C
(indicating pending C
R event.
ESET
If the controller is in RUN or LOGIC STOP state when the C
application will be halted and operational data stored (equivalent to ending the application from
Workbench) before the reset is triggered.
36
E pushbutton provides a direct method to clear exceptions, reset controller
XCEPTION
/G S
ENERAL ETTINGS
S
ETTINGS
ONFIGURATION
ONFIGURATION
R ). Releasing the button at this time initiates the C
ONFIGURATION ESET
E button:
LEAR XCEPTION
E
LEAR XCEPTION
page of the web server. See
R ' (4-1). If the pushbutton is released any time during this
ESET
R countdown completes, the display changes to Cr
ESET
ONFIGURATION
CTI Janus Programmable Automation Controller IOG
event is detected, the application
Section 4.1 General Settings.
E
LEAR XCEPTION
E event as described
LEAR XCEPTION
ONFIGURATION
R event is detected, the
ESET