1 Embedded RS-232/485/422 Controller RS-232/485/422 Communication Controller Addressable RS-232/485/422 Converter RS-232/485/422 Device Server RS-232/485/422 Communication Controller RS-232 / 485 / 422 Communication Controller Plug & Play utility Application Softwore Network interface Softwore driver devices RS-232 devices RS-485 devices RS-485 devices RS-422 RS-422 devices CPU HOST COMPUTER RS-232 RAM / ROM firmware devices RS-232 / 485 / 422 Communication Controller Network interface RAM / ROM firmware RS-232 devices RS-232 devices RS-485 devices RS-485 devices RS-422 RS-422 devices CPU devices The comparison table of these types of communication controller is given as follows: RS-232/485/422 interface 2: network interface 3: RAM/ROM firmware 4: software driver 5: application software 6: Plug&Play Utility Easy Using Flexibility Embedded Addressable RS-232/485/422 RS-232/485/422 RS-232/485/422 Device Controller Controller Server RS-232 or Same same RS-485 or RS-422 RS-485 or same same Ethernet 10M or Ethernet 10/100M or Other network User must write his special Well-design firmware & Well-design firmware & application program Source codes are open for Source codes are open for user’s modification to fit his reference It is very special requirement difficult to modify for user’s special requirement DLLs DLLs DLLs User must write his special User’s old application User’s old application application program program must be modified program can work to fit the protocol defined without modification by (3) firmware No need No need MS-COMM standard Low High Middle Middle Most Most 8000 Family 841X/881X + 8112/8114/8142/8144 843X/883X/844X/884X + 8112/8114/8142/8144 8X3X/8X4X RS-232/485/422 device HOST COMPUTER HUB RS-232/485/422 device 8X3X/8X4X RS-232/485/422 device To Ethernet Router RS-232/485/422 device 7521 family HOST COMPUTER 7521/7522/7523 family RS-232/485 devices 7522A/7524/7527 family RS-232/485/422 devices RS-232 device HOST COMPUTER 7522 RS-232/485 device RS-485 To Host-PC RS-232 device RS-485 To Host-PC 7522 RS-232/485 device RS-232/485 device HOST COMPUTER 7522A RS-422/485 device RS-485 To Host-PC RS-232/485 device RS-485 To Host-PC 7522A RS-422/485 device RS-232 device RS-232/485 device RS-232 device HOST COMPUTER RS-232/485 device 7523 RS-485 To Host-PC RS-232 device RS-232 device HOST COMPUTER 7524 RS-232 device RS-485 To Host-PC RS-232/485 device RS-232 device RS-485 To Host-PC RS-232/485 device 7523 RS-232 device RS-232 device RS-485 To Host-PC 7524 RS-232 device RS-232 device RS-232 device RS-232 device RS-232 device HOST COMPUTER 7527 RS-485 To Host-PC RS-232 device RS-232 device RS-232 device RS-232 device RS-232 device RS-232 device RS-485 To Host-PC 7527 RS-232 device RS-232 device RS-232 device RS-232 device RS-232 device 7188E1 family HOST COMPUTER HUB Ethernet 10M 7188E1 family RS-232/485/422 devices 7188E1 family RS-232/485/422 devices Ethernet 10M To Ethernet Router 10 Ethernet 10M 7188E1 HOST COMPUTER HUB RS-232 device Ethernet 10M To Ethernet Router 7188E1 RS-232 device 11 Ethernet 10M 7188E2 HOST COMPUTER HUB RS-232 device Ethernet 10M To Ethernet router RS-485 device RS-485 device 7188E2 RS-232 device 12 Ethernet 10M 7188E3 HOST COMPUTER HUB RS-422 device RS-232 device Ethernet 10M To Ethernet Router RS-485 device RS-485 device 7188E3 RS-422 device RS-232 device 13 Typical Applications N-port RS-232 to Ethernet Router To Ethernet Router HOST COMPUTER HUB * = 32 Modem RS-232 * = 32 Modem 32 Modem 7188E5 RS-232 device device RS-232 RS-232 Modem 32 7188E8 device RS-232 device RS-232 Modem Modem