Instruction manual

Maintenance and Test Procedures
Access Control Design Guide 45
Performing a Warm or Cold Reset
If an operational problem is encountered, a warm reset of a database unit can be achieved by pressing
then immediately releasing the reset button. A warm reset restarts the processor. It does not clear data
from the database unit, such as card and other data that has been downloaded from the SMS software.
A cold reset can be achieved by pressing then holding down the reset button for five seconds. The system
takes approximately 30 seconds to restart after you have taken your finger off the reset button. A cold start
clears the database unit's memory to factory-set defaults and should be performed only as a last resort.
Under normal circumstances, there should be no need to perform a warm or cold reset.
Updating Firmware
Firmware is resident in Flash memory in the database units and controllers. The firmware can be updated
by using the Flash2100 utility running on a PC.
Note: For UL294 systems, only UL Listed firmware versions are allowed. Installing non-UL Listed firmware
will void UL Listing. Please contact your support representative before updating firmware in equipment that
requires UL compliance.
The Renesas™ Flash Development Toolkit can be used for the 2DBC, 2DC, 4DC, 4DBC, 4DCN or
OC4/24 only. The Flash2100 software can be used for all boards.
The Renesas Flash Development Toolkit allows direct downloading of firmware from a portable PC. The
toolkit uses a device known as a "programming interface", which connects between a serial (RS232) port
of the PC and a connector on the unit.
Flash2100 is a slower tool, but allows upgrading to take place from any PC if the database units are
connected via a LAN. No software installation is required for Flash2100.
Using the Renesas Flash Development Toolkit (v3.07)
The Renesas Flash Development Toolkit is software from Renesas Technology Corp., which can be
downloaded as a trial version from their web site. The Renesas Flash Development Toolkit allows firmware
to be updated quickly, but requires direct physical access to the database unit/controller, and the use of a
portable computer.
To use the Renesas Flash Development Toolkit, an "M2150 Programming Interface" must be connected
between a serial (RS232) port of your PC and the following socket on the database unit/controller:
SK7 on the 4DBC or 4DCN
SK9 on the OC4/24
SK5 on 2DC
PL3 on 2DBC
SK6 on 4DC
The "M2150 Programming Interface" can be obtained from your M2150 distributor.