How Many Pumps and Nozzles Can The Enabler Support?

The Enabler supports a maximum of 99 pumps with up to 8 nozzles on each.

Depending on how the pumps are connected, other restrictions may apply. To understand these, we need to describe some basic concepts.

If you are unsure if a particular configuration is supported, please contact us.

Basic Concepts

• Physical pump - the box that you see on the forecourt. Also know as a 'dispenser'.
• Logical pump - a 'filling position' that can pump fuel for a vehicle. Each logical pump can work independently.

A physical pump usually has two sides, therefore one physical pump usually consists of two logical pumps.

A logical pump may have a single nozzle, or it may have more than one nozzle each with a different grade of fuel.

Connection Limits

• Number of ports: 5. (3xRS232 or RS485, 1xRS232, 1xIFSF)
• Pumps connected by RS-485: 48 logical pumps.
• Pumps connected by other methods: 64 logical pumps.
• Pumps connected by IFSF: 99 logical pumps.

Other limits may apply, depending on the type of pumps, and how the pumps are connected. Our pump connection articles have detailed information.

Port limits

Ports 1-3 can be used for any protocol.

Port 4 can be used for any protocol except those that use RS485 (FDM082 - Passive).

Logical pumps per port: max 16 (address range 1 to 16)

Physical connections per port: 8 (except EPS: 6) - this is determined by the FDM used.

Exceptions

Normally, a physical pump shares one connection between both sides.

Certain pump types require separate connections for each side, meaning that two connections are used up for every physical pump. In this case only 4 physical pumps can be connected to one port.