BL67 Electronic Module. 2 RFID Channels (HF/UHF). Ident. no.: 6827305. A special software (function module) for integration in PLC systems is not required.. 8 byte user data per read/write cycle. LEDs indicate status and diagnostic. Electronics galvanically separated from the field level via optocouplers. Connection of two BL ident read/write heads. Mixed operation of HF and UHF read/write heads. Transmission rate: 115.2 kbps. Cable length max. 50 m