Sergei Troizky

Not that obvious. Stepper positioning is more repeatable than servo, because the latter has certain positioning done tolerance.

I have to use Ultra 3000 on my next project; never used it before. It will work in the follower mode. Could not find answers in the manuals, for: - May the gear ratio be set with both Master and Follower values other than 1, or only as 1:n or n:1? - What is the meaning of possible negative value on the follower side of the setting (the manual mentions ±32767 range)?

PLC operates AC Inverter (a.k.a. VFD- Variable Frequency Drive) by logic level control signals, typically 24VDC, not by controlling the inverter input power. Status feedback signals from inverter to PLC are also of the logic voltage. Relay PLC outputs can produce control signals for inverter, as well as transistor ones of proper polarity. However, a relay unit has no high-speed outputs, and will not allow to use PWM signal from PLC for inverter speed control. A contactor on the drive power input is a safety disconnect, and as such should be controlled by hardware circuits, not by PLC.

In 2003, when this thread has been started, the SC-09 cable retailed in North America for over $200. The information was extremely useful at that time. Show me another thread with 70000 views on this forum! Yes, things changed since that, and so did the interest to the thread. The last topic was dated 2009, if you have not mentioned this.

Conflict between input and output sides is a common problem for smart conveyors, and may be very difficult to be resolved. Still, you have not specified: - Which of the infeed/outfeed conveyors is faster? Is it always the same? - Are the products separated on the infeed conveyor? If yes, how consistent is the separation? - What's wrong with two products unload onto the outfeed conveyor? - Can you afford products touching each other, and/or being touched by a mechanical device, and/or sliding on conveyor surface (both before and after drying)? - How responsive is the middle conveyor to speed changes? Is it reversible?

What does NO SYNC in the status bar mean? Is it described in any manual (have not found myself)? Sometimes, the SYNC status instantaneously (but repeatedly) changes to NO SYNC. If this happens during online editing of a rung or device comment, the cursors jumps to the beginning of the comment, which is very annoying and makes the editing almost impossible.

Thank you, ECSI This is very interesting information. Where is this described, by the way? Also, not clear, why should it affect comment online editing?

Could you please explain this in detail here? Or give a link if you did so before?

Yes, this is what I was asking. One more question: does the programming software allow comparing the display content with PC project file? Strangely enough, some brands/models do not (e.g. Beijer H-series).

Does it support tag addressing?

What drive?

Is this a decimal fraction or the comma is the thousands separator?

 Anybody? The question remains actual.

Trying to program PTO with different accel/decel in ML1400. What should be entered in the function file ADP word when ADI=1? It accepts only integer values, but where should I enter a reference to the four long words mentioned in the manual?

It's all about personal preferences. I hate typing underscore, and prefer to hit the spacebar twice instead. I don't know what you mean by using two spaces to start a new sentence. I need repeated spaces extremely rarely, and in such case they may be separated by Esc or Right arrow; I've already tried this. Anyways, the Hotkeys is extremely powerful tool. Thank you for the reference once again.

Does anybody know a software capable to substitute double space with assigned symbol, in real time, during typing? All keystroke substitution softwares I've found, do not recognize space as a trigger symbol or symbol for substitution. PLEASE, do not suggest any "great soft, though it cannot do exactly this".

Thanks, ECSI This looks exactly what I needed. The script must be :?*: ::% Without ?, the double space cannot be a part of a word (must be preceded with a separator character). Without *, the 3rd space is required as ending character.

From my decades-long experience, whatever large size a case/bag is, it eventually never will have enough room for your needs. :)

:) Not at all. The feature is referred as "Parallel Running" and requires a parallel link adapter on the left side of each PLC (FX2-40P with fiber optic link or FX2-40AW with twisted pair link). Allows to exchange 100 bits and 10 words in each direction. Communication is being performed automatically, data writing/reading is done by PRUN instruction.

I am working on CompactLogix in ladder, and all array instructions I've found work with word data types, not with bools.

Not that many, 256 bits maximum. Yes, I can do it as you suggest, or I can shift the array while writing 0 into the input, or do it couple other ways. Just surprised there is no instruction for such a simple task.

Post your .cxp file here and somebody will printout it for you in pdf.

After many years with EVRSI activated software, I now need to install couple new ones with Factory Talk activation. How complicated is such activation transfer between computers? I may need it almost daily. Will it affect the already installed EVRSI activated software and require it to switch to Factory Talk?

Still unclear why do you need so high frequency for PWM. The idea of PWM is its averaging in the destination device, typically into voltage, which works OK at tens of Hz. On the other hand, in FX-series too short period setting decreases the PWM resolution. For instance, with 4ms PWM period, the PWM duty may be only 0, 25%, 50%, 75%, 100%, that is only 4 increments. At full possible 1kHz, the only possible PWM duties are 0 or 100%.

 paulengr, Thank you for reply. What do you think about possibility to install the FT activation on portable USB harddisk? Or, probably, not only the activation but the entire software? Will it be possible to run it on any PC when this disk is connected? Also, can the mentioned concurrent licenses server operate on WAN (over Internet)?