Scanlab RTC6 PCIe Board - Page 339

RTC6 boards
Doc. Rev. 1.0.21 en-US
10 RTC6 Commands
339
innovators for industry
Comments
(cont’d)
• Each time camming is called, the current encoder-counter value is ascertained for use
as the new reference value. At a later time point, the corresponding command index
of the Camming command list is calculated for the then-current encoder-counter value
(using the reference value and the Scale parameter). For each call of camming, the first
command in the Camming command list (index = 0) is always the first command to
be processed.
• camming waits for a scanner delay but sets no delay itself.
• If Ctrl = 0, then the laser is (as with a normal [*]mark[*] Command) switched on at
the beginning of the Camming process and switched off after it terminates (laser delay
settings are taken into account). If Ctrl > 0, then the state of the laser is not changed;
its control is then the full responsibility of the user.
• If Ctrl = 0 or 1, then camming terminates automatically (in the next cycle) as soon as
the index first undershoots 0 or overshoots NPos –1 (the final Camming command to be
executed is then be the one with an index of 0 or NPos –1). For these two modes (as
always, if a list is BUSY list execution status), no External Starts are allowed as long as
camming has not yet terminated.
• In contrast, control modes Ctrl = 2 and 3 are endless. Here, the Camming process can
only be terminated by stop_execution or an External Stop. However, in these two
modes (as an exception) External Starts are allowed if the list (or camming) is still
active. If Ctrl = 2, then the index is executed until the end point (0 or NPos –1) and then
waits for a new external /START. If Ctrl = 3, then the index is set to modulus NPos
(whereby the encoder speed is supposed not to be so high that a complete rotation is
skipped). Thus, Ctrl = 3 works like a ring buffer.
• camming is a normal list command, but with a variable execution period.
• camming functions even if the Option Processing-on-the-fly is not activated.
• While camming is executing, get_out_pointer always provides the position of
camming, not the position of the current index.
RTC4RTC6 New command.
RTC5RTC6 Unchanged functionality.
Version info Available as of DLL 600, OUT 600, RBF 600.
References set_encoder_speed, set_auto_laser_control
Normal List
Command
camming