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  • DS203A SERIAL DEVICE SERVER (RS232)
The DS203A Serial Device Server is a device characterized by extremely compact dimensions and features: Ethernet 10 / 100BaseT Auto-MDIX (Auto-MDIX means that the "cross" leads and "straight" are automatically recognized), 8 kB buffer (one in each direction of transmission) and a power range that goes from 10 to 25 Vdc. The DS203A realizes a "Serial Device Server"; that allows you to connect any device with RS232 output format to an Ethernet-based LAN. Communication with the device can be done from any PC connected to the local network; in addition, if it has a connection to the Internet, the serial device can become accessible from any external computer. This makes it possible to place the device where we please, connect it to DS203A and connect the hub of the LAN, using cables as specified can be up to 100 meters long.
The DS203A is provided with a 10/100 BaseT port to connect to LAN at a speed of 100 Mbit/s and an RS232 universal port to connect to the device. It has a jack for the power supply (between 10-25 Vdc) and some LEDs to indicate the status of the device or Ethernet connection.
APPLICATIONS
The applications in which can be used are basically of three types: the first is to connect a serial device without changing an already existing control software. The DS203A driver is in fact able to create virtual COM ports on the PC (VSPs-Virtual Serial Ports) that, from the point of view of the program and the user, they behave as standard hardware COM ports, but which actually transform data in TCP packets sent over the LAN which are then converted by DS203A in serial format.
Or you can easily create a new management software, through which communicate directly with the device, without using VSPs. The DS203A fact uses the protocols UDP / IP transmission and TCP / IP of which many programming languages ​​and compilers (eg Microsoft Visual Basic 6.0) already available plug-in management. For the same VB6, the Tibbo offers a manual that explains how to communicate with the DS203A.
Finally, using two DS203A, you can connect two serial devices using the Ethernet connection to create a "Virtual Serial Connection", that is a connection in the eyes of the devices is serial, but in reality it is based on Ethernet technology. For example, by connecting the first DS203A to the COM port of a PC and the second to the serial port of a device and connecting the two Ethernet interfaces via a direct RJ45 cable, you can simulate the eyes of a normal serial connection software, but in reality It leverages Ethernet technology and TCP protocols. In this case it is not even necessary to use the VSPs, but will be accessed directly from the hardware COM ports.
Still, if you have an ADSL connection, you can connect directly to the Ethernet port of DS203A; in this simple way the device becomes accessible from any Internet-connected PC.
The DS203A is also characterized by 3 different operating modes:
-a to achieve the Serial Ethernet conversion and vice versa (Normal Mode);
-one to program it via serial port (Serial Programming Mode);
-one used to perform the firmware upgrade (Firmware Download Mode).
The last two are special procedures that are not used for normal applications (for details are still available of clear and complete manual). The first is instead that more interesting, and that is usually used.
FEATURES
  • External dimensions: 60 x 47 x 30 mm
  • Power supply: 10-25 Vdc
  • Ethernet: 10 / 100BaseT auto-MDIX
  • RS232 serial port: TX, RX, RTS, CTS, DTR, DSR
  • Status LEDs: 4
  • Firmware is upgradeable through the serial port or via network
  • Lines RTS, CTS, DTR and DSR: can be used as remote control of I / O
  • 8 kB buffer: one in each direction of transmission
  • Supported network protocols: UDP, TCP, ARP, ICMP (PING), DHCP, PPPoE, and LCP
  • Onboard EEPROM: stores user settings
  • Setup: through serial port or network (UDP commands or Telnet session)
  • Direct control of ADSL modems​
PHOTO
Interior view of Serial Device Server DS203A. The heart of the device is the C203A-EV-RS module
DOWNLOAD
  • EM203 manual.
  • The complete technical documentation, hardware and software manuals as well as all the software needed to run the Tibbo modules can be downloaded for free from the manufacturer's site: Tibbo

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DS203A SERIAL DEVICE SERVER (RS232)

  • Price: 102.50€


Tags: DS203A, SERIAL, DEVICE, SERVER, RS232

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