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The unique serial number of the chip is also displayed. This
may have relevance in later versions of the clock.
BUS DIAGNOSIS MENU
.
This is one of the most useful menus for checking out the
system. It shows how many boards and what type of boards
are on the bus. A "3" represents an 8 or 4 relay card and a
"1" represents a switch card. Other numbers may be used
in the future.
The example below shows that there is a relay card at
addresses 1 & 2 and switches at address 4 and 5. Thus if
you wished to add a switch one could use address 3 or any-
thing 6 or above. There are 126 possible addresses starting
with 1. 0 (for Clock) and 127 (for a CommLink Card) are
reserved. Each block of numbers is 10 addresses long for
20 addresses in a line. The moving square at the bottom of
the page shows 8 addresses polled for each movement.
Watch the display for about 1 minute. All the numbers
should remain steady. Any flickering means that the bus is
noisy and that some board or boards is having trouble get-
ting its communications through.
If you do have a board with a problem it must be checked
out and eliminated since even if the system is functioning
3301100000 0000000000
0000000000 0000000000
0000000000 0000000000
0000000000 0000000000
0000000000 0000000000
0000000000 0000000000
0000000
Addressing Bus Scan leads to three choices available in the
sub menu. The first is the automatic addressing menu.
AUTO ADDRESSING
First set the number of the address that you wish to start at.
Then press the ADDRESS/ERASE buttons on all the relay
cards and switch cards in the correct order to address them.
Each button push will automatically advance the address to
be given to the next address in order. With GR 2416/32/48
cards the address will automatically be advanced to give
room to put the board into discreet mode.
If you are adding a switch and you do not know what the
next available address is then read forward to the Bus Diag-
nostics Menu.
START ADDRESS:
1
Press Address/Erase
button of any board
to assign the address
above to it.
The address will
auto increase.
BUS DIAGNOSTICS
AUTO ADDRESSING
READ ADDRESS
BUS DIAGNOSIS
READ ADDRESS Menu
This menu will read back the address of a board that has
had its ADDRESS/ERASE (or ASSIGN) button pushed.
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