Setting Up Lines

Virtual Modems

Vmodem is a feature of the Device Server that provides “modem like” communication between two Device Servers on a network or between a Device Server and a host. This feature behaves like two modems connected across a telephone line. Typically, you use the Vmodem feature when you have multiple devices communicating with a central site. With just a single IOLAN Device Server at each end of the network, you don’t need to use multiple modems, avoiding the associated costs of calls and connections.

The data is sent in raw format from the virtual modem and can be received by another Device Server or a host. This data can be sent automatically using the Monitor DSR option and then configuring the host and port number of the receiver; if the receiving side is also a Device Server, set the Line Service to Rev Raw or Vmodem (Rev Raw if the Device Server is only receiving, Vmodem to initiate bidirectional data flow) and the Device Server port that the data is coming in on (this should match the port number on the sending Device Server). Or, you can manually start a connection by typing ADT<ip_address>,<port_number> and end the connection by typing +++ATH. The ip_address can be in IPv4 or IPv6 formats and is the IP address of the receiver. For example,

ADT123.34.23.43,10001

BIDIR

When you configure BIDIR, you are creating a bidirectional raw connection, meaning that the connection can be initiated from either the ethernet or serial side.

UDP

When you configure UDP, you are setting up a range of IP addresses and a port number that you will use to send UDP data to or receive UDP data from. For example:

The UDP configuration window, taken from the DeviceManager, is configured to:

zUDP Entry 1

All hosts that have an IP address that falls within the range of 172.16.1.1 to 172.16.1.25 and listen to Port 33001 will receive UDP data from the serial device. The serial device will only receive UDP data from the hosts in that range with a source Port of 33001.

zUDP Entry 2

All UDP data received from hosts that have an IP address that falls within the range of 172.16.1.20 to 172.16.1.50 and Port 33010 will be sent to the serial device. The Device Server not send any data received on its serial port.

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IOLAN Device Server User’s Guide, Version 1.0

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Perle Systems DS1 manual Virtual Modems, Bidir
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DS1 specifications

Perle Systems TS2 and DS1 are advanced serial-to-Ethernet devices designed to facilitate seamless integration of serial devices with modern IP networks. These devices serve as crucial tools for businesses looking to enhance their communication capabilities while leveraging existing infrastructure.

One of the standout features of the Perle TS2 and DS1 is their ability to support multiple serial protocols including RS232, RS422, and RS485. This versatile support allows businesses to connect various legacy devices to their networks, ensuring that critical equipment can still communicate effectively in an increasingly digital landscape.

The TS2 model is particularly noted for its dual serial ports, enabling simultaneous communication with multiple devices. This capability is invaluable for applications requiring real-time data transmission, such as remote monitoring and automated control systems. The DS1 model, on the other hand, is designed for single-port use, making it an ideal solution for smaller-scale operations or specific single-device connections.

Both the TS2 and DS1 incorporate advanced features such as configuration through a web interface, which simplifies setup and management. Users can easily access device settings and monitor performance metrics remotely, enhancing operational efficiency. These devices also support various network protocols such as TCP/IP, UDP, and ICMP, ensuring compatibility with a wide range of network architectures.

In terms of security, Perle Systems prioritize user data protection. The TS2 and DS1 offer features including SSL encryption and SSH protection, providing an added layer of security for sensitive information transmitted over the network. This is particularly important for industries where data integrity and security are paramount, such as healthcare and finance.

Additionally, the rugged design of both devices ensures reliable performance even in harsh environments. With extended temperature ratings and robust housing, the TS2 and DS1 can operate in diverse conditions without compromising functionality.

To summarize, the Perle Systems TS2 and DS1 provide a reliable and flexible solution for connecting legacy serial devices to modern networks. With their support for multiple serial protocols, web-based management, robust security features, and rugged design, these devices cater to a variety of industries looking to modernize their communication infrastructure while maintaining existing equipment. Whether for large-scale operations or smaller implementations, the TS2 and DS1 equip businesses with the tools needed for effective serial communication in an IP-driven world.
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