POS Software for Restaurant, Retail, Pizza, Liquor Store, Grocery and Delivery
Plexis Point of Sale Software
Call 1-302-727-0333

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Use your own Credit Card Company
Non-Cloud Based Software
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Plexis POS fully integrates Credit Card, Debit Card, EBT / SNAP Food Stamps and EBT Cash Benefits.
Obtain a compatible PAX Pin Pad Terminal from any Payment Processor
or Merchant Services provider of your choice.

Plexis POS currently supports the PAX S300 Pin Pad Terminal only.

PAX Pin Pad Terminal Internal Settings   Diagnostic Example in Plexis POS
1 Main Communication LAN
2 Backup Communication Dial
3 Maximum Tries 1
4 Connect Timeout 300
5 Lan Type Static
6 IP Address ex:
7 Subnet Mask ex:
8 Gateway IP ex:
10 DNS IP ex:
11 ECR CommType Ethernet
12 Communications Port 10009
13 Communication Protocol HTTP GET
14 Duplicate Checking ON (enable)
  Perform an Initialize Terminal command in the Plexis POS Diagnostic
utility and under the Full Response window you should see the
Pax Base Version in cell 2::

This example shows the Pax Base v1.44:
Pax S300 Pin Pad Terminal Supported Base Version

If you see this type info without any error messages then the terminal is communicating with Plexis POS properly. We have tested terminals using PAX Base v1.44 and Interface for the ECR/PC and Terminal v1.61 released by the manufacturer on August 17, 2022. Other versions may work as well but we do not guarantee or support them.

Enter the setup mode for PAX S300 terminals by holding the FUNC key down and press the "1" key.
Enter the password which is todays date (MMDDYYYY) and press the Green Arrow Key.
You may be prompted to enter the password multiple times throughout the setup process.

If you get this error when processing a card and you are certain all other settings are correct there is a good chance your router is blocking the Terminal IP address and port. Configure your router to allow access to the terminal as described below.

Router / Firewall Settings :
If you are connecting your PAX terminal through a router you will need to set Port Forwarding up for EACH terminal IP and Port connected to the router.
Port Forwarding Example :
Port forwarding example for a router
Click image for details

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Plexis Point of Sale Software
Call 1-302-727-0333

11:00am to 7:00pm Weekdays Eastern Time

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