Gasboy Atlas Fuel Systems Owner Manual - Manual (Page 26)

The Atlas Fuel System CPU Switch Settings (Series 9800 Only Including DEF 9862 Units)
Page 22 MDE-4363F Atlas™ Fuel Systems Owner’s Manual · September 2011
CPU Jumpers (or SW1 for Older CPU Boards)
SW1-1 or JP1: Baud Rate
This switch is set to reflect the communications rate of the Gasboy RS-485 pump loop. It is:
• Open for 9600 baud
• Closed for 1200 baud
The Gasboy CFN system and TopKAT ™ communicate at 9600 baud.
SW1-2 or JP2: Mode
If the Series 9800 is controlled by a Gasboy CFN, TopKAT top-mount, or TopKAT electronic
fuel management system, the switch must open (on-line mode). If the Series 9800 is controlled
by a Gasboy Series 1000 or TopKAT mechanical system, or controlled by any non-Gasboy
system, or not controlled by any fuel management system at all, the switch must be closed
(standalone mode).
Note: The 9800K is shipped in the standalone mode unless it has the TopKAT top-mount
option. With the TopKAT top-mount option, the unit is shipped in on-line mode.
SW1-3, SW1-4 or JP3, JP4: Delay Time
These two switches set the delay time used by leak detectors in submersible pump
applications. The delay time is the period between the activation of the submersible pump and
the activation of the slow flow valve. This time must be set according to the type of leak
detector installed on the submersible pump to allow a normal leak test for each transaction.
The delay time must be set to zero seconds for suction pumps.
Baud Rate SW1-1/JP1 Fuel System
9600 Open CFN
TopKAT top-mount
TopKAT electronic
1200 Closed None currently supported
Mode SW1-2/JP2 Fuel System
On-line Open CFN
TopKAT top-mount
TopKAT electronic
Standalone Closed Series 1000
TopKAT Mechanical
All non-Gasboy systems
No fuel system
Delay Time SW1-3/JP3 SW1-4/JP4
0 seconds Closed Closed
4 seconds Closed Open
5 seconds Open Closed
6 seconds Open Open