Smart-meter P1 reading
Remote data collection from an electricity meter P1 port.
P1 / Modbus LTE gateway
IPS-501
P1 LTE Gateway Pro
An LTE gateway for remote data collection from smart-meter P1 ports and Modbus RTU devices, with local buffering
P1 (RJ12)RS-232/485MQTT / HTTPS
Product role
Meter data from the P1 port to the central system
IPS-501 collects local meter and Modbus data at a configurable rate, buffers it temporarily, then forwards it over MQTT or HTTPS
Electricity meterP1 port · Modbus RTU
IPS-501Collection, buffering and protocol handling
Mobile network · MQTT/HTTPS
Data-collection systemMetering data and device management
Typical applications
Mobile transfer of meter and Modbus data
Data from P1 and serial interfaces reach the central system through a local buffer
Modbus RTU endpoint
Remote access to an inverter, storage system or other serial device.
Energy data collection
Forward measurement data to an MQTT- or HTTPS-based central system.
Temporary data buffering
Bridge network outages or scheduled uploads with a local buffer.
Indoor or outdoor deployment
DIN-rail IP20 and wall-mounted IP67 versions.
01 / 01
Key capabilities
Collection, buffering and forwarding in one gateway
Field interfaces are complemented by flexible mobile connectivity, configurable data handling and remote management
Dual field interface
P1 port and RS-232/485 Modbus RTU in one gateway.
Flexible mobile connectivity
LTE Category 1, LTE-M and NB-IoT variants with 450 MHz band options.
Configurable data collection
Default 10-second collection interval, adjustable for the project.
Local buffer
One day of temporary data storage by default.
Open data transport
MQTT and HTTPS toward the central data collector.
Remote operations
Provisioning and management through the Intelliport M2M Platform.
Technical specification
From field port to uplink protocol
Interface, mobile, data-handling and deployment characteristics are grouped separately
Application and interfacesP1 · Modbus RTU · serial port
P1 portRJ12 for reading smart electricity meters
Serial portRS-232/485, RJ45, Modbus RTU
Local configurationVia serial port using a PC application
Remote managementIntelliport M2M Platform
Mobile networkLTE Category 1 · LTE-M · NB-IoT
LTE Category 1B1 / B3 / B7 / B8 / B20
LTE-MB1/B2/B3/B4/B5/B8/B12/B13/B14/B18/B19/B20/B25/B26/B27/B28/B31/B66/B72/B85
NB-IoTB1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B28/B31/B66/B85
SIMMicro-SIM (3FF), sealable with a security label
Data handlingcollection · buffer · MQTT / HTTPS
Collection intervalConfigurable; 10 seconds by default
Temporary storageConfigurable; 1 day by default
Uplink protocolsMQTT and HTTPS
Local protocolModbus RTU; optional local data processing
Enclosure and powerIP20 · IP67 · alerting
Indoor70 × 85 × 60 mm; DIN rail; IP20
Outdoor150 × 110 × 170 mm; wall-mounted; IP67
Temperature−40…+70 °C
Power and alert5 VDC from P1 or 3–17 VDC external supply; power-loss alert
Next step
Select the right IPS-501 configuration
Network, interfaces, power supply and enclosure can be adapted to the installation environment
Useful for the consultationMeter type and P1-port characteristicsModbus devices and registersCollection and buffering intervalsMQTT/HTTPS endpoint and mobile network