2 Functions of Devices in DVP-PLC 2. Accumulative type timer: For ES/SA series MPU: The timer executes once when the program reaches END instruction. When TMR instruction is executed, the output coil will be On when the timing reaches its target. For EH2/SV/EH3/SV2 series MPU: The timer executes once when the program reaches TMR instruction. When TMR instruction is executed, the output coil will be On when the timing reaches its target. X0 When X0 = On, The PV in timer T250 will count up T250 by 100ms. When the PV = SV K100, the output coil Y0 T0 will be On. T1 T2 T1+T2=10sec When X0 = Off or the power is off, timer T250 will temporarily stop the timing and the PV remain unchanged.
When X0 is On again, the timing will SV K100 resume and the PV will count up and when the PV = T250 PV SV K100, the output coil T0 will be On. 3. Subroutine timer: Timer T192 ~ T199 are used in subroutines or interruption subroutines. For SA series MPU: The timer executes once when the program reaches END instruction. When END instruction is executed, the output coil will be On when the timing reaches its target. For EH2/SV/EH3/SV2 series MPU: The timer executes once when the program reaches TMR or END instruction. When TMR or END instruction is executed, the output coil will be On when the PV equals SV.
If the general purpose timer is used in a subroutine or interruption subroutine but the subroutine is not being executed, the timer will not be able to time correctly. How to designate SV: The actual set time in the timer = timing unit Ч set value a) Designating constant K: SV is a constant K b) Indirectly designating D: SV is data register D 2.7 Numbering and Functions of Counters [C] No. of counters (in decimal) ES/EX/SS series MPU: DVP-PLC Application Manual 2-17 TMR T250 K100 0 0 16-bit counting up, for general purpose C0 ~ C111, 112 points. Fixed to be non-latched. Total 141 points Counter C 16-bit counting up, for latched C112 ~ C127, 16 points. Fixed to be latched.
1-phase 1 input C235 ~ C238, C241, C242, C244, 7 points. Fixed to be latched. 32-bit counting up/down high-speed counter C 1-phase 2 inputs C246, C247, C249, 3 points. Fixed to be latched. 2-phase 2 inputs C251, C252, C254, 3 points. Fixed to be latched.