Comm. module Sharky Modbus module (RS485) Modbus
Internal RS485 Modbus RTU communication module for Diehl Metering SHARKY 775.
The module makes meter data available to BMS, SCADA, PLC and energy monitoring systems through a galvanically isolated RS485 interface.
- RS485 / EIA-485 interface
- Modbus RTU protocol
- For SHARKY 775
- 12–24 V AC/DC SELV supply
- Internal meter installation
RS485 Modbus RTU communication module for SHARKY 775
The Sharky Modbus module (RS485) Modbus is an internal communication module designed to make measurement data from a Diehl Metering SHARKY 775 available on an RS485 Modbus RTU network. The module is installed inside the meter in one of the available extension slots and communicates internally with the meter to retrieve measurement data.
Meter values are transferred to external building management, SCADA, PLC or energy monitoring systems through a galvanically isolated EIA-485 interface. This makes the module suitable for wired integration where reliable Modbus RTU communication is preferred.
Modbus RTU data integration via RS485
The module operates as a Modbus RTU slave and supports reading measurement data through holding and input registers. Communication parameters including baud rate, parity and stop bits can be configured to match the existing RS485 network.
The RS485 connection uses terminals 90 (+) and 91 (-), and the supported EIA-485 bus length is up to 1200 metres when correctly designed and terminated. The module requires a separate 12–24 V AC/DC SELV power supply.
See the SHARKY 775 Modbus RTU communication module user manual for register mapping, wiring, configuration and installation requirements.
Product benefits
- Adds RS485 Modbus RTU communication to SHARKY 775
- Internal installation in the meter extension slot
- Galvanically isolated EIA-485 interface
- Configurable Modbus communication parameters
- Access to meter measurement data through Modbus registers
- Suitable for BMS, SCADA, PLC and energy monitoring integration
- Supports EIA-485 networks up to 1200 m when correctly installed
Technical specifications
| Product | Sharky Modbus module (RS485) Modbus |
|---|---|
| Module type | Internal communication module |
| Compatible meters | SHARKY 775 and SCYLAR INT 8 |
| Communication interface | EIA-485 / RS485, galvanically isolated |
| Protocol | Modbus RTU |
| Operating voltage | 12–24 V AC/DC ±10%, SELV only |
| Maximum power consumption | 500 mW |
| Baud rates | 1200 to 115200 bit/s, configurable |
| Data bits | 8 |
| Parity | Even, odd or none |
| Stop bits | 1 or 2 |
| Maximum RS485 bus length | 1200 m |
| Operating temperature | 0 to +55 °C |
| Dimensions | 37.2 × 44.8 × 16.2 mm |
| Weight | 13 g |
Applications
- Building energy management systems
- SCADA integration
- PLC-based meter reading
- Heating and cooling energy monitoring
- Centralized wired meter data collection
Installation and connection
Install the module in one of the extension slots inside the compatible meter and connect it to the meter using the specified internal ribbon cable. Supply the module from a 12–24 V AC/DC SELV source and connect the RS485 bus to terminals 90 (+) and 91 (-). Correct RS485 topology and termination must be observed. Installation and electrical connection should be carried out by qualified personnel with the supply disconnected.
Additional information
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