3 Functions of Devices in DVP-PM
DVP-PM Application Manual
3-4
îš„ Memory status between ON/OFF operation
Memory type
Power
OFF->ON
MANU->AUTO
(STOP->RUN)
AUTO->MANU
(RUN->STOP)
Clear all non-latched
areas (M1031=ON)
Clear all latched area
(M1032=ON)
Default
Cleared when
M1033 = OFF
Non-latched Cleared Unchanged
Unchanged when
M1033 = ON
Cleared Unchanged 0
Latched Unchanged Unchanged Cleared 0
3.2 Values, Constants [K] / [H], Floating Points [F]
K
Decimal
K-32,768 ~ K32,767 (16-bit operation)
K-2,147,483,648 ~ K2,147,483,647 (32-bit operation)
Constant
H Hexadecimal form
H0000 ~ HFFFF (16-bit operation)
H00000000 ~ HFFFFFFFF (32-bit operation)
Floating
point
F 32 bits
Displaying floating point value by 32-bit data complying with IEEE754 standard.
±1.1755X10
-38
~ ±3.4028X10
+38
For fulllfilling different kinds of internal manipulation, DVP-PLC appies 5 foramts of number systems. Each number
system has its specific purpose and function described as below.
1. Binary value (BIN)
DVP-PM internally calculates, operates, and stores the value in Binary format.
Bit
Bit is the basic unit of a binary number system. Range is 0 or 1
Nibble
Consists of 4 consecutive bits, e.g. b3~b0. Range 0 ~ 9 in Decimal or 0~F in Hex
Byte
Consists of 2 consecutive nibbles, e.g. b7~b0. Range 00 ~ FF in Hex
Word
Consists of 2 consecutive bytes, e.g. b15~b0. Range 0000 ~ FFFF in Hex
Double Word
Consists of 2 consecutive words, e.g. b31~b1. Range 00000000 - FFFFFFFF in Hex
Bit, nibble, byte, word and double word in a binary system:
NB0NB1NB2NB3NB4NB5NB6NB7
BY3 BY2 BY1 BY0
W1
DW
W0
Double word
Word
Byte
Nibble
Bit
2. Octal value (OCT)
The external I/O points of DVP-PLC are numbered in octal format.
e.g.
External inputs: X0～X7, X10～X17, …, X377. (No. of device)
External outputs: Y0～Y7, Y10～Y17, …, Y377. (No. of device)
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