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Q1: If multiple SCADA clients poll all 8 serial ports simultaneously, will the RS485 bus get congested and cause timeout errors?

A: No. The device features an advanced Storage-Type Modbus Gateway (Auto query storage type). It actively caches register data from the RTU slaves internally. When your SCADA issues a Modbus TCP request, the gateway replies directly from its high-speed cache within 3 milliseconds. This completely bypasses the slow RS485 baud rate limitations and prevents multi-host data collisions.

Q2: Do I need to allocate 8 separate IP addresses on my factory network for a single 8-port server?

A: It is entirely flexible. You can assign a single unified IP address for the entire device (routing traffic via 8 different TCP port numbers), or you can assign a unique, independent IP address to each of the 8 serial ports if your IT department requires strict subnet segregation for different machine zones.

Q3: How many servers can I daisy-chain using the Dual-LAN ports to save switch capacity?

A: You can cascade up to 8 levels of devices in a daisy-chain topology using standard Ethernet cables. This allows you to aggregate up to 64 serial ports (8 devices × 8 ports) back to your control room using only a single uplink switch port, drastically reducing cable clutter inside your distribution cabinet.

Q4: How can I verify that my RS485 instruments are transmitting data before integrating them with the SCADA system?

A. You can use our free utility, VirCom. It features a built-in “Data Monitor” that captures and displays the hexadecimal payloads flowing through the virtual COM ports in real-time. You can also look at the physical ACT LED on the device. A yellow-blue light physically confirms that the serial port is actively sending data to the Ethernet.

⚙️ Core Enterprise-Grade Capabilities

• Dual-LAN Cascading: Dual 10/100M Ethernet ports with 2kV surge protection enable engineers to daisy-chain multiple 8-port servers together. This greatly reduces the wiring complexity, and eliminates the need for additional industrial switches in the cabinet.

• Advanced Modbus Gateway (Multi-Host): Modbus RTU to Modbus TCP Embedded Protocol Converter Advanced. It uniquely supports multi-host polling, allowing multiple SCADA clients to simultaneously read data from the serial bus without data collisions.

• Flexible IP Routing: Build your network the way you want. One unique IP address for all 8 serial ports (distinguished by TCP port numbers) or unique independent IP address for each specific serial port for tight network segregation.

• Legacy Protocol Compatibility: Supports baud rates up to 921.6 Kbps with highly configurable data frames (e.g. 7 data bits, 2 stop bits) for seamless integration with legacy, non-standard PLCs and instruments.

Documents

[User Manual] Valtoris-8CH-RS232/485-ETH User Manual

Utilities

[Setup Software] VirCom7.22