Design and manufacturing of electronic devices
 
uPLCs & Microcontrollers
  ARM
  8051
  PIC32
  PIC18
RS485 Modules
  C4E/4SD
  C4E/4SA
  C8ED
  C8SD
  C8EA
  C8SA
  C24EDL
  C24SDL
  CHAR4
  CHAR5
  CD4
  CD6
  CD8
 T1 Terminal
 T2 Terminal
 Thermometer
  CCOM
 SEM1 Semaphore
RS485 Modules ModBus
  M4E/4SD
  M4E/4SA
  M8ED
  M8SD
  M8EA
  M8SA
  M24EDL
  M24SDL
Ethernet Modules
  ETH 8SD
  ETH 8ED
  ETH 8SA
  ETH 8EA
  ETH 4ST
Adapters
  RS232 - RS485/RS422
  IB RS485 - ETHERNET
  LA RS485 - ETHERNET
Power Supplies
 Switching
 DC-DC Converter
 Laboratory
 Lineal

Adaptadores

This family of products is the perfect complement to our RS485 modules.

In many applications to access our cards from a personal computer is needed. This personal computer may not have an RS485 port.

What it will probably have is an Ethernet port, RS232C or USB. The ideal way is to use our cards via Ethernet, as this reduces the latency of the response by being able to access various cards at once.

RS232c <-> RS485/RS422 
RS232c to RS485 or RS422 converter

Most PCs do not incorporate in its basic configuration an RS485 port but they incorporate an RS232C port. This last one usually appears on the Windows operating system as COMx (where x indicates the port number). The RS232C protocol is also asynchronous and works at the same speed so it can be converted to RS485 using an adapter or converter.

From the programmer's point of view the difference between RS485 and RS232 lies in that the former is half-duplex and the second full duplex. Because the half duplex uses the same wires to transmit and receive it requires an additional line for flow control.

Usually the RTS line is used for this purpose, and it is activated to transmit and deactivated to receive. This may cause some problems to programmers since it is usually necessary to install drivers that are incompatible with newer operating systems, or develop procedures for the transmitting / receiving of nontrivial data that drift away from the initial problem.

To avoid these problems, our adapter incorporates a microcontroller which manages the flow control automatically so that only the transmission and reception signals are needed. The implemented algorithms avoid having any downtime for flow changing so that communications are more effective than those offered by our competitors' equipment.

If you want you can set our adapter card for the flow to be controlled from the program, choosing between RTS and DTR lines.

This adapter optoisolates the RS232c port from the RS485 one, in order to prevent an overvoltage in the RS485 bus, due to, for instance, lightning that could damage or leave the computer out of order.

If your computer does not have an RS232C port, you can add it on the PCI bus or on the USB bus.

IB RS485 <-> Ethernet 
Etherner to RS485 converter

This is an RS485 controller through an Ethernet port developed by us.

With this unit you will be able to group our modules and RS485 cards in sets (eg switchboards) without difficulty and control them through an Ethernet network using TCP / IP protocol. In practice, this also means that our cards (with the proper system configuration) will be accessible from anywhere in the world via the Internet.

The unit can always be configured through a Web browser. You can access it by name, without having to know the IP assigned to it. In fact this IP is usually assigned by a DHCP server.

The configuration is password protected. If you lose your password and / or configure the unit improperly you can always restore the factory settings by means of switches

The converter can be updated remotely through Ethernet using TFTP protocol.

LA RS485 <-> Ethernet 
XPORT2 based ethernet to RS485 converter

This is an RS485 controller through an Ethernet port. For this the unit incorporates therein an XPORT "microcomputer" manufactured by LANTRONIX. It comes already preprogrammed from factory so for normal use it is sufficient to configure it properly.

With this unit you will be able to group our modules and RS485 cards in sets (eg switchboards) without difficulty and control them through an Ethernet network using TCP / IP protocol. In practice, this also means that our cards (with the proper system configuration) will be accessible from anywhere in the world via the Internet.

The unit can be configured using the software provided by Lantronix, which can be downloaded from www.lantronix.com.

In this unit you can also enter your own program written in C to make smart moves. For any such development contact www.lantronix.com because they market a development system.