Gasboy Gilbarco Interface Unit - Manual (Page 19)

Gilbarco Interface Unit v2.1 Installation 11
Gasboy CFN Series
Number of hoses
For Highlines, multi-hose MPDs, and so on, this is the same as the number of physical hoses.
For pumps that dispense different kinds or blends of fuel at different times from the same hose,
this is the number of distinct kinds of fuel dispensed from the unit.
Fixed blenders may appear to have five hoses, thought they actually dispense only three
products, two unblended and one blended.
CRIND address
For older CRINDs, regarding the two-wire CRIND address, you must subtract 1 from the
CRIND address shown in CRIND diagnostic test number 6 to get the real CRIND two-wire
address.
The real address is shown in the address jumper tables for MOC and generic CRINDs in
Gilbarco publications MDE-2562 and MDE-2377. Ignore the Auto Gas Only tables you may
find there.
CRINDs may be set to addresses from 1 to 32. Use addresses from 1 to 16 with Gasboy
equipment.
If you can, use the pump number (the number painted on the pump, not the pump two-wire
address, where they differ) as the two-wire address for the CRIND. For instance, give pump 1,
CRIND 1. This will simplify maintenance later.
If you have more than sixteen fueling positions, this won’t work. You will need a second
interface unit, and you will have to start over at CRIND two-wire address #1 on the second
interface unit.
This second interface unit will have DIP switch bank 2, positions 4-8 set to put its first two
pumps, with pump two- wire addresses 01 and 02, on a PCU number other than PCU number 1.
Usually you start with the next PCU number not used on the first interface box.
For example, if your first interface box uses PCUs 1 through 8, for sixteen fueling positions
with two per PCU, then the second interface box will usually be switched to start at PCU 9.
To find the reader number of the CRIND addressed as 01 on the second interface unit:
• Begin with the interface unit’s starting PCU number, as set in DIP switch bank 2, posi-
tions 4-8.
• Take that starting PCU number and double it.
• Then subtract one.
Supposing the first PCU on the second interface unit is PCU number 9. If you double that,
you have 18. Then subtract one, leaving 17. From this, the CRIND addressed as two-wire
address 01 on the second interface box will appear as reader terminal number 17.
Sometimes it is desired to offset the CRIND numbers to allow island reader terminals or
indoor receipt printers to answer as low-numbered reader terminals. This works at sites with
only a few readers, but can run into problems at sites with many.
It is better to assign the CRIND reader numbers first, and then to assign receipt printers and
Gasboy Island Card Readers after that.
Reader number
This is the reader terminal number to be used by the Site Controller. As mentioned previously,
this is determined by the CRIND two-wire address and the starting PCU number for the interface
unit on which the CRIND is found.
The formula for determining the reader number is:
• Step 1: multiply the starting PCU number (which is set in DIP switch bank 2, positions
4-8) by 2.
• Step 2: subtract 2 from the real CRIND two-wire address (as pointed out elsewhere, the