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<p>The Modbus P1 Dongle is a device that enables communication between your TeltoCharge EV charging station and a smart meter using the Modbus RS-485 protocol. This setup is essential for accurately monitoring and controlling the energy usage during EV charging sessions.</p>
<p>The Modbus P1 Dongle is a device that enables communication between your TeltoCharge EV charging station and a smart meter using the Modbus RS-485 protocol. This setup is essential for accurately monitoring and controlling the energy usage during EV charging sessions.</p>
<h2>Smart Meter Connection</h2>
<h2>Smart Meter Connection</h2>
<p>The dongle is connected to the P1 port of the smart meter via a provided P1 cable. This connection allows the dongle to read energy consumption data directly from the smart meter:</p>
<p>The dongle is connected to the P1 port of the smart meter via a provided P1 cable. This connection allows the dongle to read energy consumption data directly from the smart meter:</p>
=== RS-485 Connection: ===
<p>The dongle features RS-485 terminals which are critical for establishing communication with the TeltoCharge system. These terminals are usually labeled as Ground (GND), A+ (positive differential signal), and B- (negative differential signal).
<p>To connect the dongle to the TeltoCharge system, you'll need to use an appropriate RS-485 cable:
<p>Connect the 'A+' terminal of your cable to the 'A+' port on the TeltoCharge device.
<p>Connect the 'B-' terminal of your cable to the 'B-' port on the TeltoCharge device.
<p>In case of communication errors, swapping the 'A+' and 'B-' connections might resolve the issue./p>