A great solution/s to interconnect Modbus RTU devices on Modbus RS485network.
Modbus RTU
Modbus RTU is a serial communication protocol. At the physical layer Modbus RTU can work on RS232 or RS485 based communication links. Modbus RTU works on a Client/Server architecture. There can be only one Client on a Modbus RTU network. The Client initiates the poll and the Servers respond to the Client’s request. If an RS232 based topology is used there can be only one Server connected to the Client. However if RS485 based topology is used it is possible to daisy chain up to 31 Servers and connect to the Client.
ProtoConvert can supply and support gateways that can have a Modbus RTU Client or a Server interfaces.
When a gateway is configured as a Modbus RTU Client it would keep reading data from the field devices using Modbus RTU protocol. It will also be possible to program the gateway to relay commands to the field device/s. Hence when used as a Modbus RTU Client the gateway reads data from Modbus RTU Servers like power meters, UPS’, PDUs, CRAC units and makes the data available on a variety of other protocols like BACnet, SNMP , LonWorks and many others.
When a gateway is configured as a Modbus RTU Server it can be connected to a Modbus RTU Client and be a source of data. It would respond to the polls from the Modbus Client and publish the data as per the internal configuration. Hence by using the gateway as a Modbus RTU Server it is possible to publish data from other protocol networks on the Modbus RTU network for the Client/PLC/SCADA to consume.
Modbus RS485
Modbus RTU is a serial communication protocol. At the physical layer Modbus RTU can work on RS232 or RS485 based communication links. Modbus RTU works on a Client/Server architecture. There can be only one Client on a Modbus RTU network. The Client initiates the poll and the Servers respond to the Client’s request. If an RS232 based topology is used there can be only one Server connected to the Client. However if RS485 based topology is used it is possible to daisy chain up to 31 Servers and connect to the Client.
ProtoConvert can supply and support gateways that can have a Modbus RTU Client or a Server interfaces.
When a gateway is configured as a Modbus RTU Client it would keep reading data from the field devices using Modbus RTU protocol. It will also be possible to program the gateway to relay commands to the field device/s. Hence when used as a Modbus RTU Client the gateway reads data from Modbus RTU Servers like power meters, UPS’, PDUs, CRAC units and makes the data available on a variety of other protocols like BACnet, SNMP , LonWorks and many others.
When a gateway is configured as a Modbus RTU Server it can be connected to a Modbus RTU Client and be a source of data. It would respond to the polls from the Modbus Client and publish the data as per the internal configuration. Hence by using the gateway as a Modbus RTU Server it is possible to publish data from other protocol networks on the Modbus RTU network for the Client/PLC/SCADA to consume.
The table below lists the various hardware options available with this protocol driver combination, please make a selection based on the point capacity, number of ports, and type of communication interfaces you require.
| Name of Hardware with Tail Code | Point Capacity | RS 485 ports | RS 232 ports | Ethernet Port | M-Bus | LonWorks | KNX | WiFi | 4G/LTE | Product Datasheet |
|---|---|---|---|---|---|---|---|---|---|---|
| FS-QS-2010-F | 250 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-2110-F | 1000 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-2210-F | 500 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-2310-F | 3000 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-2410-F | 5000 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-3010-F | 250 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-3110-F | 500 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-3210-F | 1000 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-3310-F | 3000 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-3410-F | 5000 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | Attachment |
| FS-QS-3510-F | 10000 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG-K30A-1K | 1000 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | – |
| PG-K30A-2K | 2000 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | – |
| PG-K30A-3K | 3000 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | – |
| PG-K30A-4K | 4000 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | – |
| PG-K30A-5K | 5000 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | – |
| PG7022-1K | 1000 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7022-2K | 2000 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7022-3K | 3000 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7022-4K | 4000 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7022-5K | 5000 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | – |
| PG7023-1K | 1000 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7023-2K | 2000 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7023-3K | 3000 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7023-4K | 4000 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7023-5K | 5000 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7024-1K | 1000 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7024-2K | 2000 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7024-3K | 3000 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7024-4K | 4000 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |
| PG7024-5K | 5000 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | Attachment |