2 Functions of Devices in DVP-PLC 2.1 All Devices in DVP-PLC ES/EX/SS series MPU: * The latched area is fixed and cannot be changed. DVP-PLC Application Manual 2-1 Type Device Item Range Function Relay (bit) X External input relay X0 ~ X177, 128 points, octal Total 256 points Corresponds to external input points Y External output relay Y0 ~ Y177, 128 points, octal Corresponds to external output points M Auxiliary relay General purpose M0 ~ M511, M768 ~ M999, 744 points Total 1,280 points The contact can be On/Off in the program.
Latched* M512 ~ M767, 256 points Special purpose M1000 ~ M1279, 280 points (some are latched) T Timer 100ms timer T0 ~ T63, 64 points Total 128 points Timer indicated by TMR instruction. If timing reaches its target, the T contact of the same No. will be On. 10ms timer (M1028 = On) T64 ~ T126, 63 points (M1028 = Off: 100ms) 1ms timer T127, 1 points C Counter 16-bit counting up (general purpose) C0 ~ C111, 112 points Total 128 points Counter indicated by CNT (DCNT) instruction. If counting reaches its target, the C contact of the same No. will be On.
16-bit counting up (latched*) C112 ~ C127, 16 points 32-bit counting up/down high-speed counter (latched*) 1-phase 1 input C235 ~ C238, C241, C242, C244, 7 points Total 13 points 1-phase 2 inputs C246, C247, C249, 3 points 2-phase 2 inputs C251, C252, C254, 3 points S Step Initial step (latched*) S0 ~ S9, 10 points Total 128 points Used for SFC. Zero return (latched*) S10 ~ S19, 10 points (used with IST instruction) Latched* S20 ~ S127, 108 points Register (word data) T Present value of timer T0 ~ T127, 128 points When the timing reaches the target, the contact of the timer will be On.
C Present value of counter C0 ~ C127, 16-bit counter, 128 points C235 ~ C254, 32-bit counter, 13 points When the counting reaches the target, the contact of the counter will be On. D Data register General purpose D0 ~ D407, 408 points Total 600 points Memory area for data storage; E, F can be used for index indication.
Latched* D408 ~ D599, 192 points Special purpose D1000 ~ D1311, 312 points Total 312 points Index indication E, F, 2 points Pointer N For master control nested loop N0 ~ N7, 8 points Control point for main control loop P For CJ, CALL instructions P0 ~ P63, 64 points Position index for CJ and CALL I Interruption External interruption I001, I101, I201, I301, 4 points Position index for interruption subroutine.
Timed interruption I6□□, 1 point (□□＝10 ~ 99, time base = 1ms ) (for V5.7 and versions above) Communication interruption I150, 1 point Consta nt K Decimal form K-32,768 ~ K32,767 (16-bit operation) K-2,147,483,648 ~ K2,147,483,647 (32-bit operation) H Hexadecimal form H0000 ~ HFFFF (16-bit operation) H00000000 ~ HFFFFFFFF (32-bit operation)