Delta DVP-20PM

3 Devices
Functions of counters:
If the input signal of a counter is turned from OFF to ON, and the present value of the counter matches the
value set, the output coil of the counter will be ON. A setting value can be a constant preceded by K, or the
value stored in a data register.
16-bit counter:
1. The setting value of a 16-bit counter must be in the range of K0 to K32,767. (K0 is equal to K1. If the
setting value of a counter is K0 or K1, the output contact of the counter will be ON after the counter
counts for the first time.)
2. If a power cut occurs when a general counter in a DVP-20PM series motion controller counts, the
present value of the counter will be cleared. If a power cut occurs when a latching counter counts, the
present value of the counter and the state of the contact of the counter will be retained, and the
latching counter will not continue counting until power is restored.
3. If users move a value greater than the setting value of C0 to C0 by means of the instruction MOV, the
contact C0 will be ON, and the present value of the counter will become the setting value next time X1
is turned from OFF to ON.
4. The setting value of a counter can be a constant preceded by K, or the value stored in a data register.
(The special data registers D1000~D2999 can not be used.)
5. If the setting value of a counter is a value preceded by K, the setting value can only be a positive
value. If the setting value of a counter is the value stored in a data register, the setting value can be a
positive value or a negative value. If a counter counts up from the present value 32,767, the next
value following 32,767 will be -32,768.
Example:
LD X0
RST C0
LD X1
CNT C0 K5
LD C0
OUT Y0
C0
Y0
X1
C0 K5CNT
X0
C0RST
1. If X0 is ON, the instruction RST will be executed, the present value of C0 will become zero, and the
output contact will be reset to OFF.
2. If X01 is turned from OFF to ON, the present value of the counter will increase by one.
3. If the present value of C0 matches the setting value K5, the contact C0 will be ON (Present value of
C0=Setting value=K5). K5 will be retained even if X1 is turned from OFF to ON again.
X0
X1
Y0, C0 contact
Present value of C0
0
1
2
3
4
5
Setting value
0
32-bit up/down counter:
1. The setting value of a 32-bit general up/down counter must be in the range of K-2,147,483,648 to
K2,147,483,647. The states of the special auxiliary relays M1208~M1255 determine whether the 32-bit
general up/down counters C220~C255 count up or count down. For example, C208 will count up if
M1208 is OFF, and C208 will count down if M1208 is ON.
2. The setting value of a 32-bit up/down counter can be a constant preceded by K, or the value stored in
two consecutive data registers. (The special data registers D1000~D2999 can not be used.) A setting
value can be a positive value, or a negative value.
3. If a power cut occurs when a general counter in a DVP-20PM series motion controller counts, the
DVP-20PM Application Manual
3-10