Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 46)

2 Functions of Devices in DVP-PLC
DVP-PLC Application Manual
2-18
as SV can be a positive or negative value and an SV will occupy two consecutive data registers.
5. If using DMOV instruction, WPLSoft or HPP to send a value which is large than the setting to any high-speed
counter, next time when the input point X of the counter goes from Off to On, this contact will remain unchanged
and it will perform addition and subtraction with the present value.
6. When the PV reaches up to 2,147,483,647, the next PV will turn to -2,147,483,648. When the PV reaches down
to -2,147,483,648, the next PV will turn to 2,147,483,647.
High-speed counters for ES/EX/SS series MPU, total bandwidth: 20KHz
1-phase input 1-phase 2 inputs 2-phase 2 inputs Type
Input C235 C236 C237 C238 C241 C242 C244 C246 C247 C249 C251 C252 C254
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
U: Progressively increasing input A: A phase input S: Input started
D: Progressively decreasing input B: B phase input R: Input cleared
1. Input points X0 and X1 can be planned as counters of higher speed with 1-phase 1 input reaching 20KHz. But the
two counting frequencies added together has to be smaller or equal 20KHz. If the input is a 2-phase 2 input signal,
the counting frequency will be approximately 4KHz. The 1-phase input of high-speed counters X2 and X3 and
reach 10KHz.
2. The use of DHSCS instruction together with DHSCR instruction in ES series MPU cannot exceed 4 times.
High-speed counters for SA/SX series MPU, total bandwidth: 40KHz
1-phase input 1-phase 2 inputs 2-phase 2 inputs Type
Input C235 C236 C237 C238 C239 C240 C241 C242 C244 C246 C247 C249 C251 C252 C253 C254
X0 U/D U/D U/D U U U A A B A
X1 U/D R R D D D B B A B
X2
U/D U/D R R R R
X3 U/D R S S S
X4 U/D
X5 U/D
U: Progressively increasing input A: A phase input S: Input started
D: Progressively decreasing input B: B phase input R: Input cleared
1. The frequency of input points X0 and X1 of 1-phase input can reach up to 20KHz, X2 ~ X5 can reach 10KHz. The
frequency of C251, C252 and C254 of 2-phase input (X0, X1) can reach up to 4KHz. The maximum frequency of
C253 is 25KHz (only supports 4 times frequency counting).
2. Input point X5 has two functions:
a) When M1260 = Off, C240 will be normal U/D high-speed counter.
b) When M1260 = On and DCNT instruction enables C240, X5 will be the shared reset signal for C235 ~ C239.
Counter C240 will continue to receive the input signals from X5.