Wishlist Quick view SIEMENS Siemens S7-1500, TM PosInput 2 6ES7551-1AB01-0AB0 €613.00 S7-1500, TM PosInput 2 SIMATIC S7-1500, TM PosInput 2 counter and position detection module for RS-422 incremental encoder or SSI absolute encoder, 2 channels, 2 DI, 2 DQ per channel Datasheet: Download PDF Add to Wishlist