The Atlas Fuel System
CPU Switch Settings (Series 9800 Only Including DEF 9862 Units)
Page 3-20
MDE-4363G Atlas™ Fuel Systems Owner’s Manual · August 2018
SW2 (For Older and Newer CPU Boards)
Notes:1) Four-position switch bank only exists in older boards C06394, M05318, M05346 for
the Series 9800.
2) Ten-position switch bank only exists on newer Series 9800 CPU Boards M06333A.
For older CPU Board, this four-position switch pack serves a dual purpose:
• As an address setting when communicating using the Gasboy RS-485 PAC Data Protocol
(CFN or TopKAT), or
• When using a pulse output board, as a pulser output rate selector for pulser data to be sent
to a fuel management system other than a Gasboy CFN or TopKAT.
For newer CPU Board, this ten-position bank serves a dual purpose:
• As an address setting for the Gasboy RS-485 PAC Data Protocol (CFN or TopKAT), Unit
of Measure, BDM Enable, Software Load Enable, and Electro-mechanical Totalizer
Enable; or
• As a pulse output rate selector when pulser data is sent to a fuel management system other
than Gasboy CFN or TopKAT, Unit of Measure, BDM Enable, Software Load Enable, and
Electro-mechanical Totalizer Enable.
Address Switches
A unique address identifier must be set when the Series 9800 is connected to the Gasboy
RS-485 pump loop via the 9800 RS-485 I/F PCB. There are 16 possible address combinations.
Addressing must start at 1 and continue sequentially through 16. The physical wiring order
does not have to correspond with the address order, that is, the first unit on the RS-485 loop
does not have to be address 1. With the TopKAT top-mounted option, the address must be set
to 1. The following chart gives the switch settings and address selections.
Address
SW2-1
SW2-2
SW2-3
SW2-4
1
Closed
Closed
Closed
Closed
2
Open
Closed
Closed
Closed
3
Closed
Open
Closed
Closed
4
Open
Open
Closed
Closed
5
Closed
Closed
Open
Closed
6
Open
Closed
Open
Closed
7
Closed
Open
Open
Closed
8
Open
Open
Open
Closed
9
Closed
Closed
Closed
Open
10
Open
Closed
Closed
Open
11
Closed
Open
Closed
Open
12
Open
Open
Closed
Open
13
Closed
Closed
Open
Open
14
Open
Closed
Open
Open
15
Closed
Open
Open
Open
16
Open
Open
Open
Open