A universal GPI/O interface for the devices that still need direct signal control. The GPX Pro Series connects contact closures, analog levels, and relays to modern networks, then shares that data with SNMP managers, MQTT brokers, REST clients, and Modbus devices.
Every new feature ships on both the GPX-8 Pro and GPX-32 Pro; the GPX-8 Pro simply has fewer channels.
VERSATILE UNIVERSAL GPI/O INTERFACE
Universal interface for local or remote connection and communication supporting parallel channels of analog, status, control, and monitoring.
INTEGRATE LEGACY AND NEWER OPERATIONS
Bridges contact-closure and analog equipment into SNMP, MQTT, and REST-based systems.
IDEAL FOR CLOUD-CENTRIC WORKFLOWS
Publishes to MQTT brokers and exposes a REST API, so cloud platforms consume GPX data directly.
FIND IT BY NAME (NEW)
NetBIOS and mDNS discovery make each unit reachable by name on the local network.
COMPATIBLE WITH AXESS SOFTWARE
Fully compatible with Axess network-based management application. Translates GPI/O channels into data and relays information for processing by Axess.
STANDALONE OR NETWORK DEVICES
Standalone site management tool with programmable controls and notifications. Can also be integrated into networks that are reporting into a centralized NOC or hub.
UNLIMITED EXPANSION
Multiple units can be deployed within an Axess system for unlimited GPI/O expansion.
KEY FEATURES
| Protocol | GPX role | What it does |
|---|---|---|
| GPI/O | Native I/O | Opto-isolated inputs, analog inputs, and relay outputs for direct signal control |
| SNMP | Agent and manager | Exposes GPX channels to NMS platforms, sends traps, and polls and sets SNMP data on site equipment |
| MQTT | Publisher and command subscriber | Publishes channel changes to a broker as JSON and accepts the same commands as the REST API, over TLS with broker authentication |
| REST API | HTTP/HTTPS JSON server | Reads and sets channels, alarms, and configuration; HTTP by default, HTTPS once an SSL certificate is loaded; JWT token authentication with Viewer, Operator, and Administrator roles |
| Modbus TCP | Master | Reads and writes coils, discrete inputs, and holding and input registers on slave devices such as meters, PLCs, and sensors; serial devices connect through a gateway |
| Ping | Monitor | Checks reachability of devices across the network and raises alarms |
| NetBIOS / mDNS | Name discovery | Makes each unit reachable by host name on the local network |
| Email (SMTP) | Client | Sends alarm and event notifications |
| Syslog | Client | Forwards the event log to a syslog server |
| NTP | Client | Keeps unit time in sync for accurate event logs |
| SSH / Telnet | Management | Command-line access for configuration and diagnostics |
All protocols run on both models. GPI/O, Ping, SNMP, and Modbus channels share one budget per unit: 192 on the GPX-32 Pro and 96 on the GPX-8 Pro. Each unit polls up to 20 Modbus TCP slave devices, and devices behind one gateway count as one.
The GPX-PRO is a flexible monitoring and control device that works as a complete solution for a single station or remote site, or as one node in a wide-scale network monitoring system. Embedded software provides SNMP agent and manager functions, secure MQTT publishing, a REST API with optional HTTPS, Modbus TCP master control, device pinging, and alarm and event notification, all in a 1RU footprint.
Pair the GPX-32 Pro with the TE-09 Punch Down Panel to terminate every channel on standard 110 blocks. The TE-09 is used with the GPX-32 Pro only.
