7 Application Instructions API 50-99 Present value in C251 500 400 300 200 100 15,000 (Hz) 0 10,000 5,000 0 M1153 3 4 D1151 0 1 2 0 12. Special registers for flags and relevant settings: DVP-PLC APPLICATION MANUAL 7-23 Flag Function M1152 DHSZ instruction in frequency control mode M1153 The execution of DHSZ frequency control mode is completed. Special D Function D1151 Table counting register for DHSZ multiple set values comparison mode D1152 (low word) D1153 (high word) In frequency control mode, DHSZ reads the upper and lower limits in the table counting register D1153 and D1152. D1336 (low word) D1337 (high word) Current number of pulses output by DPLSY instruction