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inPOS M530 GMP-3 Device Pairing and Setup Guide

A working M530 device does not automatically mean the software integration is ready. Confirm fiscal, technical and operational prerequisites together.

Medusa Software product teamPublished: 07.08.2026Updated: 07.10.2026

Confirm registration and authorisation

Use the authorised service channel to confirm business registration, model, software version, bank application, TSM status and GMP-3 communication permission. Check Turkish fiscal-device obligations separately with the accountant and official GİB sources.

Serial and exact model
Software and bank version
GMP-3 activation
Authorised service contact

Prepare network and product mappings

Set the IP address, port and firewall rule between the Medusa Pos computer and M530. Verify names, units, tax rates, departments and payment types with sample sales. A successful ping alone does not prove working integration.

Reserved IP address
GMP-3 port access
Tax and department mapping
Product and payment lines

Record complete sales and interruptions

Test cash, card, contactless, multiple payment lines, cancellations and returns. Check paper shortage, bank or TSM access, network failure, unfinished transactions and X/Z report requirements. Record receipt results and staff recovery steps before going live.

Successful sale and receipt
Cancelled or unfinished transaction
X/Z report conditions
Paper, network and TSM interruption

Author

Medusa Software product team

The Medusa Pos product team documents retail and restaurant workflows using product, setup and support experience. Confirm device, licensing and migration conditions for your business before accepting a quote.

inPOS M530 · GMP-3

How is a GMP-3 device paired?

Pairing Medusa Pos with inPOS M530 requires identification of the correct device and software, GMP-3 activation through an authorised channel, local network connectivity and verification of the sale result. Entering an IP address alone does not complete fiscal integration.

Verify device and authorisation
Check serial number, business registration, software version and integration licence. Confirm GMP-3 activation and the manufacturer's application/pairing requirements with authorised service. Do not copy another till's configuration.
Prepare connection and mappings
The technical team checks PC-to-device IP/port access and allows only the required firewall connection. Save the Medusa Pos device entry with the correct serial number. Use a sample basket to check product, VAT, department and payment mappings.
Test sale and interruption results
Compare the device receipt, sale amount and Medusa Pos result for supported cash/card scenarios. Test missing paper, lost connection and interrupted transactions. Reconcile an uncertain payment against the device receipt and transaction record before restarting it; document the checks.

Menu names and pairing methods may vary by device version. Installation follows manufacturer/authorised service requirements and the business's verified fiscal scope.

inPOS manufacturer and authorised service

inPOS M530 fiscal POS device with touchscreen — Actual inPOS M530 device

Cash register & GMP-3

One sales workflow from till to device.

Assess scanners, scales, printers and payment devices by exact model and connection. For inPOS M530, version, GMP-3 authorisation and network conditions are verified during setup.

See the real product before deciding

Let’s plan your business workflow with Medusa Pos.

Download the Windows demo from GitHub and review sales, table service, inventory and reporting screens. Contact Medusa Software for setup and device compatibility.

Download Windows demo Get information for my business