Configuration
Configure meter source, Modbus RTU, termination and LED brightness in firmware v2.
Firmware v2 configuration is shared across Smart Meter Modbus Adapters. The Device Manager identifies the connected hardware and shows only settings supported by that adapter.
Open the Device Manager, connect with a USB data cable, change the required values and select Save.
Hardware applicability
Smart-meter source
Regular NRGD: DSMR/P1 only. ZAP2/NRGDH-based NRGD: DSMR/P1 or HAN-NVE
DSMR/P1 or HAN-NVE
Modbus mapping
Available
Available
Device ID, baud rate and serial format
Available
Available
Software-controlled 120 Ω termination
Not available
Available; enabled by default
RGB LED brightness
Not available on the regular NRGD; shown by the Device Manager when supported on the ZAP2/NRGDH-based implementation
Available
Modbus monitor
Available
Available
Smart-meter source
Use DSMR/P1 for a meter connected directly through the P1 input. On D1MC or the ZAP2/NRGDH-based NRGD, select HAN-NVE when a supported HAN-NVE meter is connected through the appropriate adapter cable. The NRGDH-based implementation requires a HAN (RJ45)-to-RJ12 cable.
D1MC's Linky TIC interface is hardware only at this stage. Linky software support is planned and not yet available, so it is not a current meter-source choice.
Modbus communication
Configure the adapter and Modbus master with the same values:
Mapping: the register model expected by the connected system.
Device ID: address used by the Modbus master.
Baud rate: communication speed.
Serial format: data bits, parity and stop bits, such as
8E1.
The firmware v2 defaults are the Default - TeltoCharge mapping, device ID 43 and 38400 8E1. Selecting another mapping changes the register model only; it does not automatically change the communication values. See the canonical register mappings and confirmed device configurations.
RS485 termination
RS485 termination is a hardware-dependent setting. D1MC includes a software-controlled 120 Ω terminator and ships with it enabled. P1 Modbus Pro (NRGD) does not provide this setting.
Termination is normally used at both physical ends of an RS485 bus, not at every device. Leave D1MC termination enabled when it is at an end and disable it when it is an intermediate node, subject to the design of the complete bus and the connected equipment.
Status LED brightness
D1MC has an RGB status LED whose brightness can be adjusted in the Device Manager. The ZAP2/NRGDH-based NRGD implementation also has an RGB status LED; the Device Manager shows the brightness setting when that hardware supports it. The regular NRGD uses a mono status LED and does not expose this setting. See LED indicators for status meanings.
Modbus monitor and diagnostics
Enable the Modbus monitor during commissioning or troubleshooting. It displays the 30 most recent Modbus RTU requests, including device ID, function code, address, word count and result. It is a local diagnostic view, not permanent logging or analysis software.
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