11 Operation
11.1 Operating Modes
SCADAPack LP Controllers may start up in RUN, SERVICE or COLD BOOT mode. Start up in the
RUN mode automatically executes TelePACE Ladder Logic and TelePACE C programs in the
controller memory. Start up in the SERVICE mode stops the programs to allow reprogramming and
controller initialization. Start up in the COLD BOOT mode initializes the controller and erases all
programs.
11.1.1 Run Mode
The RUN mode is the normal operating mode of the SCADAPack LP Controller. No action is
required to select RUN mode. When power is applied to the controller board:
• The user defined serial communication parameters, for all COM ports are used.
• If a TelePACE Ladder Logic or ISaGRAF application program is loaded in RAM, it is executed.
• If a TelePACE or ISaGRAF C application program is loaded in RAM and the program checksum
is correct, it is executed.
• If there is no application program in RAM and there is an application program in flash ROM
then the flash ROM program will be executed.
• The controller lock settings and password are used.
11.1.2 Service Mode
SERVICE mode is used during application programming and maintenance work. When the
SCADAPack LP controller starts in SERVICE mode:
• The default serial communication parameters are used (see section 10-Serial Communication for
a description of the default parameters).
• The TelePACE Ladder Logic or ISaGRAF program is stopped.
• The C program is stopped.
• All programs are retained in non-volatile memory.
• The controller lock settings and password are used.
SERVICE mode is selected by performing a SERVICE BOOT using the following procedure:
1. Remove power from the controller.
2. Hold down the LED POWER button.
3. Apply power to the controller.
4. Continue holding the LED POWER button until the STAT LED turns on.
5. Release the LED POWER button.
Note: If the LED POWER button is released before the STAT LED turns on, the SCADAPack
controller will start in RUN mode.
11.1.3 Cold Boot Mode
COLD BOOT mode is used after installing new controller firmware. When the SCADAPack LP
controller starts in COLD BOOT mode:
SCADAPack LP Hardware Manual
May 26, 2006
33
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