Perle’s family of RS232 to Ethernet converters (commonly referred to as Terminal Servers or Device Servers) are the best choice for transmitting serial data across an IP network. Offering flexibility, high performance and advanced RS232 to Ethernet converter technology, Perle IOLANs are ideal for applications and devices that require an efficient way of communicating with serial RS232 devices over an Ethernet network.
A wide selection of choices are available to completely address your RS232 to Ethernet project needs.
A Complete RS232 to Ethernet Solution
Perle IOLAN converters offer a comprehensive set of RS232 serial to Ethernet solutions for your project and can match the communication specifications of your equipment such as the right RS232 connector match, compatible control signal, flow control, baud and data throughput performance.
Perle RS232 to Ethernet converters come in various cable connector types to meet your cabling needs. Typically when the serial equipment is DTE (Data Terminal Equipment) based, a male DB9 or DB25 is the most common.
1 – DCD
2 – RD
3 – TD
4 – DTR
5 - GND
6 - DSR
7 - RTS
8 - CTS
9 - RI
1 – Shielded GND
2 – TD
3 – RD
4 – RTS
5 – CTS
7 – Sig GND
8 – DCD
20 – DTR
22 – RI
Because CAT5 is inexpensive and commonly available, some users prefer to use Ethernet ( straighthrough ) cabling for their serial equipment connections. Perle IOLAN RS232-Ethernet models with RJ45 connectors along with the appropriate DB9 or DB25 adapters make this possible. Click here for more cabling pinout details ».
RS232 flow control
Flow control on the IOLAN RS232 to Ethernet converter is accomplished through the use of software Xon/Xoff flow control, as well as hardware flow control with RTS and CTS signaling between DTE and DCE.
RS232 Control Signaling
As a DTE, the IOLAN presents DTR and RTS signals on its RS232 port(s). This is straightfoward when communicating directly with a modem or modem emulating DCE device. However, when connecting to another DTE device or when using RJ45 CAT5 cabling schemes, a crossover cable or converter is required. IOLAN cable accessories are available to assist with these connections.
Asynchronous RS232 baud rates typically range from 50K baud to 230K baud with some devices operating at speeds as high as 500K baud. While most RS232 to Ethernet converters on the market offer a limited selection of baud rates for communicating, the Perle IOLAN supports the full typical baud rate range and also offers customizable baud rates for those RS232 devices that require unique baud rates.
The TrueSerial® Difference
TrueSerial® is an innovative approach that delivers the most authentic RS232 connections across an Ethernet network.
Historically, serial RS232 based software applications and devices were implemented around a simple direct cable connection, however as companies begin replacing their direct serial cable connections with a modern Ethernet infrastructure using serial RS232 to Ethernet converter products, some will experience difficulties in making this networked connection behave as it did when directly connected. This can be attributed to the lack of raw processing power as well as how the data is handled across the network by the RS232-Ethernet converters.
For more details on Perle’s TrueSerial technology »