LEDs for operation status
BMTX-SVN01C-EN 121
Clear database, RAM, and reset
Database contains the user programmed data, which consists of all BCU
objects, such as areas, VAVs, I/O, UCMs, trends, CPL, etc. (For a defini-
tion of RAM, see “BCU reset procedures” on page 120.)
In most cases, you will perform this operation from the PC Workstation,
as described in the Tracer Summit System Programming guide. However,
this can also be done at the BCU as follows:
1. Change the DIP switch S1 position 8 to Off.
2. The LED display will show the following sequence:
J, 8, 7, 6, 4, 3, 2, H, –, –P
3. Change DIP switch S1 position 8 back to on.
4. The LED display will show the following sequence:
J, 8, 7, 6, 4, 3, 2, H, –, –P, Pd, “dancing dash”
When the BCU has code and detects a change in DIP switches at S1, the
BCU clears the current database and looks for a PC Workstation from
which to download a database that matches the new device ID (corre-
sponding to the settings at DIP switch S1).
Clear code, database, RAM, and reset
Code consists of the BCU image software, which is similar to the operat-
ing system in a PC. (For a definition of RAM, see “BCU reset procedures”
on page 120.)
In most cases, you will force a BCU to accept new code from the PC Work-
station, as described in the Tracer Summit System Programming guide.
However, this can also be done at the BCU as follows:
1. Turn off power to the BCU.
2. Set all DIP switches to on.
3. Turn on power. The LED should display the following sequence:
8, 7, E (with decimal point flashing for about 10 seconds), 5, 4, 3, 2, –,
EC, Cd, –H, “dancing dash”
4. Turn off power and set the DIP switch to its proper position.
5. Turn on power and observe the second display sequence described in
“New BCU” on page 119.
Note:
You must have a PC Workstation connected, and that worksta-
tion must contain the appropriate version of BCU code. If the
PC Workstation is not connected, the procedure will have no
effect on the BCU.
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