Along with TCP/IP network fast popularization, thus enabled the TCP/IP network to obtain enormous rich, the TCP/IP network has already extended to society's each quoin. With the RS-32 string mouth correspondence, the RS-485/422 main line correspondence compares, the TCP/IP network has the signal distance to be far, so long as joins the Internet, the signal distance may infinite lengthen. But the RS-232 string mouth correspondence distance only has 15M, but the RS-485/422 signal distance only has 1200M (to be allowed to lengthen signal distance through 485 repeaters, but most lengthens 6000M, moreover also must regard external environment to decide). TCP/IP network correspondence quality stable, because the TCP/IP network is based on the complex environment design, has the automatic error correction function, therefore the correspondence quality is extremely stable, not external environment disturbance. But RS-232 string mouth correspondence, RS-485/422 main line correspondence then antijamming ability quite bad, is easy to make a mistake. Along with the TCP/IP network development, its traffic flow unceasing enhancement, TCP/IP network 100M already has now become the standard disposition middle, moreover the 1000M data connection also is popularizing. But the RS- 232 strings mouths correspondences, the RS-485/422 main line correspondence speed generally most greatly only may achieve about 100K, moreover along with the speed enhancement, its stability, the signal distance can have the inverse ratio correspondingly to change.

Must let the RS-232/485/422 string mouth equipment transform has the TCP/IP network contact surface outside the network to suppose, needs to research and develop and conformity CPU, DSP, the TCP/IP agreement and so on each kind of software and hardware, needs to invest the huge human resources and the time cost. Will richly use Shenzhen richly forever to pass the RS-2323/485/422 string mouth which the technical limited company will provide to transfer the TCP/IP network the solution, you were allowed not to need to invest the extra human resources and the time cost. You will be allowed rich forever to pass the technical limited company using Shenzhen the string mouth extension network solution, will facilitate quick realization 232 revolution of TCP/IP,,485 revolution of TCP/IP the function.

Will richly use Shenzhen richly forever to pass the technical limited company the RS-232/485/422 string mouth to transfer the TCP/IP network series product (string mouth server, terminal server, will string together mouth networking server), will be allowed the very convenient realization string mouth extension network function nf. Is opposite to the original system, strings together the mouth extension network solution to have the following merit:

1. Simple is easy to use, to maintain conveniently. Starts, the Chinese and English guide from the first installment which strings together the mouth server can lead you to experience entire the installation process. Enable you to be allowed the relaxed free use string mouth server.

2. independent operations servers, save the PC resources. In the middle of the existing system, PC manages many RS-232 string mouth terminal device mostly uses the multi- strings mouth card, the multi- strings mouth card use has some malpractices, must open the engine case, inserts the multi- strings mouth card in PC PCI, inside the ISA slot, if needs to increase in the system the RS-232 string mouth terminal device, must increase the multi- strings mouth card, if in the PC slot is insufficient, but also must increase PC. But terminal server then is different, is in the TCP/IP network independent operation server, not PC main engine and its PCI, ISA slot quantity limit. Only needs the terminal server to join the TCP/IP network, then immediately joins each kind of expansion the RS-232 string mouth terminal device, the realization string mouth extension network function nf. The great economical time cost and the expense expenditure, and will avoid the software and hardware conflict the possibility.

3. hotly inserts pulls out the function and the string mouth altogether uses the function, reduces the system to stop the running time. In original system use RS-232 string mouth correspondence as well as in multi- strings mouth card, if needs to maintain the system or the increase string mouth equipment, must the PC power failure prevent the string mouth equipment is burned down by the electric current. Will richly use Shenzhen richly forever to pass the technical limited company the string mouth extension network solution, if will need to maintain the system or the increase string mouth equipment, because the string mouth networking server will be the independent operation server, but with TCP/IP the network joint RJ45 connection, will be allowed to support hotly inserts pulls out, does not need then to complete the PC power failure. The use string mouth extension network solution, may let you simplify the maintenance process, decreases regarding the overall system influence, the improvement system maintenance management, saves the maintenance cost. Moreover, strings together the mouth server to be allowed altogether to use by many PC, extremely is suitable for the redundant system application.

4. uses strings mouth extension network solution, does not need to change the application procedure, then realizes the string mouth equipment networking. The use string mouth server, you may fast cause you the RS-232/485/422 string mouth to transfer the TCP/IP network connection, the use hypothesized string mouth driver, you may use the original string mouth application procedure, and may develop the RS-232/485/422 string mouth as well as the multi- strings mouth card application under the original application software, and carries on the elastic expansion. You also may act according to the demand, carries on the Socket programming, lets PC directly use the TCP/IP agreement and the string mouth server correspondence.

5. high elastic wiring and the string mouth expansion satisfies the RS-232/485/422 string mouth equipment distribution and the expansion demand. Along with the social economy development, is more and more high regarding the system demand, requests a higher distribution and the expansion. The TCP/IP network considered at the beginning of the design the high distribution and the expansion, used the TCP/IP network, the system may obtain the nearly infinite distribution and the expansion. Rich forever will pass the technical limited company using Shenzhen the string mouth extension network solution, will join the RS-232/485/422 string mouth equipment through the string mouth server to be allowed to install in has the TCP/IP network any position, each WINDOWS the NT main engine will be allowed to control reaches the 256COM mouth, namely in the use hypothesized string mouth driver situation, you will be allowed to control reaches 256 strings mouths server, if will use the Socket programming, the control string mouth server quantity has not limited. The string mouth server through the TCP/IP network as well as the Internet, may control distributes in the different floor, the different workshop, the different city even different country RS- 2.32/48/422 billion string mouth equipment, is most has the distribution and the expansion system solution.