Gasboy Atlas Fuel Systems Owner Manual - Manual (Page 28)

The Atlas Fuel System CPU Switch Settings (Series 9800 Only Including DEF 9862 Units)
Page 24 MDE-4363F Atlas™ Fuel Systems Owner’s Manual · September 2011
JP8 (or SW1-8): RS-485 Emergency Pump Stop Detection
This switch must be set to open (default) to enable RS-485 pump stop detection. The Gasboy
RS-485 pump stop switch, when activated, places a serial break character on the RS-485 lines.
When SW1-8 or JP8 is open, this breaker character triggers the termination of the sale(s)
immediately, if a transaction(s) is in progress.
This switch must be set to closed (in TopKAT or CFN Plus system Communication) to disable
RS-485 pump stop detection. This resolves the issue associated with the false break characters
being detected that may be introduced when 485 half-duplex communication is used.
JP9 only exists on new boards and is not used.
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.
ESTOP Detection SW1-8/JP8
Enabled Open
Disabled Closed
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