7 Application Instructions API 50-99 ii) When M1260 = On and C240 is enabled by DCNT instruction, X5 will be the shared reset signal for C235 ~ C239. The counter C240 will still receive the counting input signals from X5. 4. High speed counters supported by SC series MPU (total bandwidth: 130kHz): U: Progressively increasing input A: A phase input S: Input started D: Progressively decreasing input B: B phase input R: Input cleared a) The functions of the high speed counters of input points X0 ~ X5 are the same of those in SA/SX series MPU. b) The input points of 1-phase input X10 (C243), X11 (C245) and (X10, X11) C250 can reach a frequency of 100kHz.
The total bandwidth of X10 ~ X11 is 130kHz. C255 of the 2-phase input (X10, X11) can reach a frequency of 50kHz. c) For SA/SX/SC series MPU, the uses of DHSCS instruction with DHSCR instruction cannot be more than 6 times and the uses of DHSZ instruction cannot be more than 6 times as well. When DHSCR instruction designates I interruption, the designated high speed counter cannot be used in other DHSCS, DHSCR and DHSZ instructions. d) The functions of X10 ~ X11 high speed counters in SC series MPU: i) When X10 and X11 are set as 1-phase 1 input or 1-phase 2 inputs. The maximum frequency of a single phase can reach 100kHz.
When they are set as 2-phase 2 inputs, the maximum frequency can reach 50kHz. ii) X10 and X11 can select rising-edge counting mode or falling-edge counting mode. X10 is set by D1166 and X11 is set by D1167. K0: rising-edge counting. K1: falling-edge counting. K2: rising/falling edge counting (only supports X10). iii) The counting up and down of C243 are determined by the On/Off of M1243. The counting up and down of C245 are determined by the On/Off of M1245. Rising-edge and falling-edge counting are not able to take place at the same time. The rising-edge trigger and falling-edge trigger of C250 are determined by the content (K0 or K1) of D1166.
C255 can only be used in a 4 times frequency counting and you can only select rising-edge trigger. iv) When C243 or C245 is in use, you will not be able to use C250 or C255, and vice versa. DVP-PLC APPLICATION MANUAL 7-8 Type 1-phase 1 input 1-phase 2 inputs 2-phase inputs Input C235 C236 C237 C238 C239 C240 C241 C242 C243 C244 C245 C246 C247 C249 C250 C251 C252 C254 C255 X0 U/D U/D U/D U U U A A A X1 U/D R R D D D B B B X2 U/D U/D R R R R X3 U/D R S S S X4 U/D X5 U/D X10 U/D U A X11 U/D D B