Inovance H3U Series - Page 578

577
8
8 Electronic Cam 8.8.1 Writing Electronic Cam Data
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Operands
Operand
Bit Soft Element Word Soft Element
System·User System·User Bit Designation Indexed Address Constant
Real
Number
m1 X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM V Z Modication K H E
m2 X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM V Z Modication K H E
D X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM V Z Modication K H E
n X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM V Z Modication K H E
Note: The soft elements in gray background are supported.
◆
Functions and actions
The CAMWR instruction modies electronic cam table data in the unit of pulses.
●
[m1] species a cam table to be modied. When m1 = k11 to k13, the
M-Pos value (SD48, SD49) of an
X axis cam, the M-Pos value (SD148, SD149) of a Y axis cam, and the M-Pos value (SD248, SD249) of a Z axis
cam are specied, respectively
.
●
[m2] sets the starting point of key points, m2 = k2 to k360.
●
[D] indicates the head address. Multiple continuous address units starting with [D] are occupied. Each
key point occupies two 32-bit registers that ag positions of master and slave axes respectively; that is,
each key point occupies four address units.
●
[n] indicates the number of key points. (m2 + n – 1) must be less than or equal to the number of
downloaded key points.
◆
Notes:
1) Only one
CAMWR
instruction can be executed at a time. If more than two CAMWR
instructions are needed, the next instruction can be executed after the current
instruction stops a scan cycle.
2) CAMWR
instructions are executed in multiple cycles. An OFF-to-ON switch of the
special register SM82 indicates that modication is nished.
3) When modication is nished, cam table data is changed. In this case, the data uploaded or
read back with instructions is modied data. If an electronic cam is running, modied data
cannot take effect immediately. To make the data take effect in the next cam cycle, you need to
set special ag bits (SM83, SM183, and SM283). If the electronic cam is disabled, or if modied
data does not take effect when the electronic cam is running, the data will automatically take
effect when the electronic cam is started the next time.
4) The rst point of an electronic cam table is the starting point and cannot be modied.
Therefore, m2 must be greater than 1. (m2 + n – 1) must be less than or equal to the number of
downloaded key points.
5) The M-Pos value must be greater than that of the previous point and less than that of the next
point, or error 16268 will be returned.