Gasboy 9120K Series Installation - Manual (Page 48)

9820K Setup and Special Features CPU Switch Settings
Page 44 MDE-4567C 9120K and 9820K Series AST Pumps Installation and Operation Manual · September 2008
Switch SW2
This four-position switch pack serves a dual purpose: as an address setting when
communicating on the Gasboy RS-485 loop or TopKAT, or as a pulser output rate selector
when pulser data is sent to a fuel management system other than a Gasboy CFN or TopKAT.
Address Switches
A unique address identifier must be set when the 9820K is connected to the Gasboy RS-485
pump loop via the 9820A RS-485 I/F PCB. Since there are 16 possible address combinations,
up to 16 units (single or twin) may be connected to the pump loop. Addressing should 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.
Tabulated below are 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
Pulser Output Rate Switches
When the 9820K is connected to external control equipment other than a Gasboy CFN system
(standalone), the pulser signals are sent out via the 9820K Pump I/F PCB. The pulse rate
required by the monitoring equipment can be configured by setting the switches as shown in
the chart below. The pulse rate represents Pulses Per Gallon (PPG, domestic) or Pulses Per
Liter (PPL, international). For domestic units, the pulse rate can be up to 500 PPG. For
international units, the pulse rate can be up to 100 PPL. This switch may need to be sealed by
a Weights and Measures paper seal if the 9820K is used for the resale of product.