MDE-4363G Atlas™ Fuel Systems Owner’s Manual · August 2018
Page 3-19
CPU Switch Settings (Series 9800 Only Including DEF 9862 Units)
The Atlas Fuel System
SW1-5 or JP5: Hose Pressurization
If the Series 9800 program is configured for US Gallons, this dip switch setting is ignored and
the program will always act as if it is enabled. If the Series 9800 program is configured for
Liters or Imperial Gallons, this switch will control whether pump pressurization is enabled. If
a pump has been idle for more than ten minutes or this is the first use after start-up, a
maximum of 0.02 units of unrecorded volume will be pumped into the pump hydraulics during
the pump’s segment test.
SW1-6 or JP6: Authorization
This switch allows activation of the Series 9800 from some types of fuel management systems.
When the switch is closed, a 115 VAC (230 VAC international) signal must be present on the
AUTH/Control Feed line for pump activation to occur (required setting for Series 1000,
TopKAT mechanical, and all non-Gasboy systems). When open, the Series 9800 ignores the
AUTH/Control Feed line (normal setting for CFN, TopKAT top-mount, TopKAT electronic, or
no fuel system).
JP7 (or SW1-7): Electronic Totalizers
This switch must be open for normal operation. When closed, this switch enables the reset of
the electronic totalizers. For more information, refer to
“Commercial Electronic (Series 9800
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 break 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.
Pressurization SW1-5/JP5
Enable
Closed
Disable
Open
Authorization SW1-6/JP6
Fuel System
Yes
Closed
Series 1000
TopKAT mechanical
All Non-Gasboy systems
No
Open
CFN
TopKAT top-mount
TopKAT electronic
No fuel system
Totalizers
JP7 (or SW1-7)
Reset
Closed
Normal
Open
ESTOP Detection
SW1-8/JP8
Enabled
Open
Disabled
Closed