Delta DVP-20PM

9 Electronic Cam
operates in floating point format. Therefore, the real-time modification data should be converted into
binary floating point value first by DFLT instruction. In addition, floating point format should also be
adopted when monitoring electronic cam data in Monitor Table.
The format of DFROM/DTO instruction for setting up electronic cam data is as below. In electronic cam
application, electronic cam 0~electronic cam 2 is regarded as #100~#102 special modules, i.e. for
accessing electronic cam 0, operand m
1
has to be set as K100. Operand m
2
represents the starting CR
number, and the total number of CR will be a multiple of 4. Operand S refers to the starting number of
designated source device. Operand n refers to the number of records to be written into CR. Every
record of data consists of 2 words, and the set value of n should be a multiple of 2. Please note that the
16-bit TO/FROM instructions are not supported currently.
X0
DTO m1 m2 S n
K100= CAM Chart 0
K101= CAM Chart 1
Starting number
of designated source device
CR No.
K102= CAM Chart 2
Number of records
of 32-bit E-CAM data
X0
DFROM m1 m2 S n

CR table of electronic cam
CR# Function
Data
type
Data
length
0~9999 Creating/Modifying single electronic cam data DWord 1
10000 Creating rotary cut electronic cam data DWord 10
10001 Reading electronic cam status DWord 7
10002 Electronic cam chart real-time change DWord 1
10003 Smooth curve interpolation DWord 3
10005 Reading electronic cam status in capture mode DWord 5
 Explanations of control registers
CR#0~9999: Creating/Modifying single electronic cam data
[Description]
DVP-20PM is built in with 3 sets of electronic cam charts: Electronic cam chart 0~electronic cam chart 2.
Every electronic cam chart supports electronic cam data of 10,000 points and is set up by CR#0~9999.
One set of electronic cam data consists of 2 points including Master and Slave position, and the unit of
every point is Dword. For example, 2 sets of electronic cam data include 4 Master/Slave points which
requires 8 CRs as the below structure. In addition, for details about single-data real time modification,
please refer to 9.4.2.1.
D0
D1
D2
D3
...
D7
CR #0
CR #1
CR #2
CR #3
...
CR #7
M: Master position
S: Slave position
32 -bit instruction n=4 indicates 2 sets of CAM Data,
Specified CR
M0Low
M0High
S0Low
S0High
...
S1High
Corresponding
CAM Data
Specified devices
DVP-20PM Application Manual
9-25