產(chǎn)品介紹：
6 個(gè)非隔離RS-232端口
The XW-board series are for uPAC-5000, LP-5000, and WP-5000 series.
One PAC can only plug only one XW-board.
The XW-board series have following common specification:
DI channel is dry contact, sink type.
DO channel is open collector, sink type.
