The SPC2.5 Has Four Serial Ports As Shown in the Board Layout Below

Port Connections

The SPC2.5 has four serial ports as shown in the board layout below:

Port P1

Port P1 on the SPC2.5 is currently a spare and is not used.

Port P2

The EGM should always be connected to P2 of the SPC2.5 via the appropriate harness.

Port P3

Port P3 on the SPC2.5 is always considered as the secondary system port. This port is only active when the Dual Port option is selected on the EGM. This port is generally used when connecting a secondary system such as an EZ-Pay system, or an accounting system in the case of West Virginia.

Port P4

Port P4 on the SPC2.5 is always considered the primary system port. In most situations, the accounting system should be connected to this port. In unique situations such as in West Virginia, the state-wide security monitoring system must be connected to this port, in which case the accounting system will be connected to P3, the secondary system port. Note: While Port P4 is designated as the primary port and Port P3 is designated as the secondary port, there is no technical reason why these two connections could not be switched (provided the SPC ID Number and the Port configurations in the SPC Configuration menu are set correctly). For consistency, it is advised not to switch this functionality.
Note: BESS is available ONLY on the primary system port, p4. It includes support for Extended Simple Serial as well as the Coupon Cashless extensions and the Coupon Redemption extensions as defined in the BESS protocol specification.