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Topics - cch1955

Pages: 1 ... 4 5 [6]
76
Technical support / MD-HMI code with T100MD2424 and EXP16R
« on: November 08, 2006, 03:11:07 PM »
Great one:
Do you have a routine for this combination as you do for the others? it would save some time
in having to modify the drivers included with the MD-HMI module. It appears
this combination has not been included with the downloads.
Thanks

77
Technical support / Another interesting question...
« on: November 06, 2006, 05:03:45 PM »
I have a T100MD2424+ , the standard unit.
How many words of a program will it hold?
Currently at 73 circuts 117 ladder words, 566 function words.
I am coding along here blindly, maybe I am about out of memory??
How do I estimate avalible memory? The compiler tells you what you compiled, not how much space is avalible.

I figure it is in the documentation, but after several dives into it, I dont see it.

Thanks

78
Technical support / HMI multilevel menus
« on: October 06, 2006, 01:59:59 PM »
Do you have an example of coding that impliments menus having several levels deep? For example on the main display F1 initiates a move to another display and  function key assignment wher F1 initates a different action based on the menu. I can see that it could be done in ladder, basic or a comination with flags to keep track of what level you are at in the menus.

 

79
Technical support / MD-HMI Module clear function
« on: October 05, 2006, 04:19:06 PM »
Is there a CLEAR function for the MD-HMI Module? I havent found any example or code. I currently just write blanks to the screen.

80
Technical support / print code with custom functions
« on: October 05, 2006, 09:22:13 AM »
In your documentation it appears that you can print out a ladder with the custom function code used at the various locations in the ladder print out. Is this an option or something that needs to be down loaded?
In the documentation portion of a project this would really help understand the flow of the program.
Thanks

81
Technical support / Just two more analog inputs
« on: September 26, 2006, 01:00:40 PM »
What is the easiest way to add two more analog inputs to the t100md2424? I was hoping for something cheap and easy.

82
Opinions & Feedback / Wish list and comments
« on: August 29, 2006, 03:19:58 PM »
I like the TRI PLC. I have been working with it for some time. I think it would be even better if the PC based code generation tools would support long varible names and equate them to the internal variable names (A-Z, DM[1-4000] It would
I would love floating poitn make managing program development much quicker. As it is you must keep notes ore spreadsheets to keep trak without  difficulties.

Pulling all douments togther into one manual with sections would be easier to use. The information is usually around in one of the (3-5) manuals or on line but it is not as good as a single document.

Floating point would be nice! Less fooling around to get where you need to go. Maybe a newer processor is needed here?

Thanks
In the trenches.



83
Technical support / simple analog input pot
« on: August 21, 2006, 04:51:28 PM »
In the T100MD+ installation guide page 7 you show using a 1k pot for a  low cost input. Is there any reason for using a 1k rather than a 5k pot? I assume the A/D input is very low current and I will use the 5volt analog supply voltage. so I would think the 5k would be acceptable. The industrial version of the low cost pot I am using is not avalible in 1kohms.

Thanks

84
Technical support / Stepper drive connection
« on: August 15, 2006, 03:07:34 PM »
I am using Automation Direct Surestep driver. The unit has optoisolated inputs. I am supplying +24v from PLC pwr supply to Step+ and Direction+ terminals.
See  http://web2.automationdirect.com/static/manuals/surestepmanual/ch2.pdf page 9 for PLC connection with 24volt outputs. I use 2200ohm limiting resistors as shown. Out 1 to direction-, out5 to step-. I notice when stepping and direction line is high, both led on output are dim. When only step led on, normal brightness. I susspect 2200 ohms is not right value for resitor driving isolated inputs.  Ideas? Concerns?
thanks

85
Technical support / Analog outputs unbuffered
« on: August 14, 2006, 09:27:44 AM »
I am using th analog output of the T100MD to control a pair of VFD'S. I noticed the comment that the outputs are "Unbuffered". I assume thismeans they have no protection for over current etc. The VFD'S have an input which is for 0-10VDC and has scaling so I can use the 0-5 output from the T100MD. My plan is to connect the reference ground from the VFD to the 0VDC connector by DAC outputs and the DAC #1 output to the VFD input. Do I need a current limiting resistor for this or other conditioning? The cabling is less than 5 fet and shielded.

86
Technical support / A PLC counter question
« on: August 02, 2006, 01:19:13 PM »
In using PLC counters to count transitions on a pulse train from a prox and encoder wheel.

I would like to use PLC counter for this, but am concerned I will get multiple counts for low speed (state does not change between scans) and may miss pulses at high speed (frequency faster than scan time) I know HSC can do this but have used up that capacity.

Is there some functionality in the PLC counters tha deals with this? As an alternative I could use the interupt function or a periodic timer with time suited to the pulse train.

Comments? Samples?

thanks

87
Technical support / Stepper controller velocity change
« on: July 31, 2006, 02:41:41 PM »
If I issue a STEPMOVE comand can I midway trough the move change the velocity by issuing a SETSTEP command with a new velocity?

I have an application that is on a winder with a stepper driven laying axis where I need to follow the supply spool and allow for operator induced speed changes out of the PLC control loop.

88
Technical support / Internet Trilogic manual
« on: July 28, 2006, 10:31:09 AM »
Where can you down load a PDF of the Programmers reference manual I got with my PLC? I have the small green covered book, but would like to print it out in 8 1/2 x 11 paper for my notebook.

Thanks
Chris

89
Technical support / Ladder counters
« on: July 26, 2006, 04:37:00 PM »
In my application I need to use the ladder logic counters (2) for length measurment taken by sensor wheel running on product. Frequency worst case is 70ms (14hz). I know scan time is dependant on many factors. I am concerned that my frequency may be too high and I will miss counts making length wrong. I am assuming state change for counter input from one scan to the next increments the counter.

Do you have an "guideline" of maximum frequency for the ladder counters based on bare minimum PLC program?

If I had this I could rough out what I may be able to count on with lines of code etc.

Thanks
Chris

90
Technical support / HS counters and quadrature encoders
« on: July 24, 2006, 02:32:34 PM »
I am working on a small project that uses T100MD with two encoders. If I am using the HS counters 3&4 , 5&6,  I am unclear on decoding multiplier to the HS count register. To be clear: If I have 100 line encoder, will it change the counter by 100 per revolution or 400 per revolution? I am only running at 550 rpm so speed should be fine.

Thanks
Chris

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