SICK DFS60A-BGCM12000 Incremental encoders. SICK DFS60A-BGCM12000 is a incremental encoders in the DFS60 family. SICK identifies this exact configuration as manufacturer article 1059562. The official technical record specifies MTTF D (mean time to dangerous failure): 300 years (EN ISO 13849-1) 1); Pulses per revolution: 12,000 1); Measuring step: 90°, electric/pulses per revolution; Measuring step deviation at non binary number of lines: ± 0.002°; Error limits: ± 0.03°; Communication interface: Incremental. The linked SICK data sheet is specific to DFS60A-BGCM12000.