RS232 to RS485/422 conversion module for OMRON PLC. Replacement of OMRON NT-AL001 conversion module; Convert the RS232 interface of OMRON PLC or touch screen to RS485 or RS422 interface; No external power supply required; Optoelectronic isolation; Lightning and surge protection; Baud rate: 0-115.2Kbps, self-adaptive; Maximum communication distance: 2km (9.6Kbps); Support multi-point communication; Standard lead rail mounting.