This adapter is compatible with Siemens PC Adapter and HMI adapter,fully support RS232 port of PC and HMI to PROFIBUS/MPI communication, use the Siemens special protocol processing chip,it can be used for Siemens S7-300/400 series PLC and other equipments with PROFIBUS/MPI interface. RS232-RS485-power supply are all optical isolated, especially suitable for the strong interference and communication interface easily damaged industrial scene.
PC Adapter CN is a high-tech adapter compatible with Siemens PC Adapter and HMI Adapter,fully support RS232 serial port of PC and HMI to PROFIBUS/MPI communication, adopt the Siemens protocol processor chip,no functional defects. PC Adapter CN is the opto-isolated adapter for industrial design.It has the surge protection and anti-lightning protection circuit on the RS232 interface and RS485 interface, support hot plug, is suitable for Siemens S7-300/400 series PLC and other equipments with PROFIBUS/MPI interface. In particular, it applies to the strong interfere industrial situations and the safeguard in the circuit guarantees the safely running of the system.
PC Adapter CN can communicate between S7-300/400PLC and RS232 interface of third party HMI,can replace the Siemens HMI Adapter.

The low version PC/MPI+ didn’t adopt the Siemens protocol processor chip,but adopt the MCU and use the software to achieve the profibus protocol,the protocol is not perfect and has the defect,only support MPI communication,not support profibus communication,can only connect few HMI and have the defect. When there are many nodes or third-party device in the network,it can’t identify every node. At the same time, it may have the risk that PC/MPI+ can’t be used after the PLC internal program is upgraded in the future.
Main Technical Specifications:

● RS232 interface can connect PC or HMI etc third party devices,baud rate 9.6Kbps～115.2Kbps automatically adjust.
● Support PROFIBUS and MPI communication, auto bus protocol test,largest baud rate 1.5Mbps.
● Power supply from PLC port,24VDC, Power Consumption 2W,with over current and surge protection.
● Power-RS485-RS232 all isolated
● Opto-isolated voltage 1000VDC.
● RS232 interface has the anti-surging protection
● RS485 interface has the anti-lightning and surging protector, Repeatability surge capacity: Ipp=100A(10/700us，4KV),meet the standard ITU-TK20/21、VDE 0433. ±15KV ESD protection.
● Need additional 24VDC power for the long distance communication, the largest cable length meets the profibus standard.
● With the power indicator, data sending indicator, data receiving indicator
Can install the adapter on the S7-300/400PLC rail or 35MM standard rail.
● Shape Size: 123mm×68mm×30mm(Length*Width*Height),with the mounting bracket
● Working Temperature: -20～+75℃