Elmomc SimplIQ Software Manual Manual de usuario Pagina 177

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SimplIQ Software Manual The Position Reference Generator
MAN-SIMSW (Ver. 1.4)
11-36
External position command
ECAM table input
0
EM[4]
ET[3]
EM[4]-EM[7]
ET[1]
ET[2]
ET[4]
EM[4]
IETmax
2 IETmax
ET[EM[2]]-ET[EM[5]]
Figure 11-16: Cyclical ECAM
Note that the external position command is summed from the ECAM table outcome and
a cumulative offset, which is n x (ET[EM[2]] = ET[EM[5]]) with n being an integer.
The cumulative offset is lost in the following circumstances:
Homing changes the auxiliary position counter value.
FR[3] is changed.
EM[1] is changed.
EM[1] is set to the existing value, with EM[2], EM[3], EM[4] or EM[5] changed.
When the cumulative offset is lost, and if the software reference generator is not running
an interpolated mode, the software reference is automatically adjusted by the same value
so that the motor will not jump (refer to section
11.2.5.1).
11.2.3 Dividing the ECAM Table into Logical Portions
The ECAM table can store several distinct movements, with a portion of the table used
for each movement. This enables a future movement to be programmed into the drive
while the present movement is executing.
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