Accessories for Unimotor Servomotors. Signal Cables. Digits 1, 2 and 4 indicate feedback technology. Digit 3 indicates the type of cable. The Digit 5 indicates the completion of the cable on the side of the dispenser. Cables for Incremental Encoders (RC, CA) and Absolutes (versions EM, FM, EC, FC, EB, FB). 5 m signal cable for type CR, CA, EM, FM,EC,FC,EB and FB