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Messages - cch1955

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76
Technical support / Editor version issue????
« on: October 29, 2013, 02:14:34 PM »
I am working on an old program of mine and updating it. When I bring up the code, I have no custom function numbers and cant edit the custom functions.

I suspect a version issue or overwrite/ save issue.

Ideas on how to resolve the issue?

77
Technical support / RS-485 vs Ethernet between two TRI PLC
« on: February 15, 2013, 09:25:31 AM »
I have an application where I need to have communication between two Triangle PLC'S I need this to be very robust and the data rates will be low. The enviroment is outdoors or in a light industrial area. Possibly some RF around from devices in the facility. A couple of stepper drivers are also in this system.

I would like to use the Ethernet using non-shielded CAT5 or CAT6 cable so I could easily interface to PC'S The RS-485 looks to be very robust but not my first choice.

Based on many application of your products in many situations, which is a good choice?

78
Technical support / Re:A great new stepper command for wish list
« on: October 30, 2012, 10:13:07 AM »
I understand the work around you propose. It is very similar to what I have created to handle the situation with the current software. I works, but requires much more devlopment.

The reason I request this new feature is to simplify what the programmer must do to accomodate a mid STEPMOVE hold requirment. The proposed STEPHOLD command is easily understood and implimented.

Thank you for your consideration.

79
Technical support / A great new stepper command for wish list
« on: October 29, 2012, 01:21:41 PM »
I have used the stepper inder on numerous applications. The boards work very well.

It would be very helpful to have a MOVEHOLD command. The command would cause an executing STEPMOVE to decelerate to a stop and hold at zero speed until commanded (input goes high) causing the motor to ramp back up and complete the STEPMOVE command.

Thanks for the great products.

80
Technical support / Re:Zero speed sensor question
« on: June 25, 2012, 01:54:21 PM »
I appreciate the suggestion, nice simple idea. I used it 100% and so far, so good. Might be a good example to add to sample code section since need is common to many applications.

81
Technical support / Zero speed sensor question
« on: June 19, 2012, 10:22:09 AM »
FMD1616-10

I am using PULSEFREQUENCY to determine when an encoder input bit to HSC has zero or very low frequency (has come to a stop) . The issue is it detects the state very slowly - maybe 2-3 seconds. I have tried many ways of coding it with same results.

Possibly another tool is better at detecting low speed state change faster?

82
Technical support / Re:Different than documentation FMD1616-10
« on: June 18, 2012, 07:59:27 AM »
Thanks for the update notification.

83
Technical support / Re:FMD1616-10 step stop issue
« on: May 24, 2012, 05:06:27 PM »
I agree grounds can be a problem. I checked them all and made sure no ground loops. No matter what I did with grounds did not help. On a scope the encoder signal comming in were very clean, no signs of noise riding on them. The drive is a AC servo with line filter on power and shielded cables grounded at one end. Thanks for the help.

84
Technical support / Re:FMD1616-10 step stop issue
« on: May 24, 2012, 12:38:16 PM »
I determined the problem was being caused from a quadrature encoder input to pins 3&4 from a ULN2003A driver. I set it up as shown on page 7-1 of FMD1616-10 manual.

I added 2.2K ohm current limiting resistors on the lines comming from the driver outputs to inputs 3&4 and the problem was solved.

85
Technical support / Re:FMD1616-10 step stop issue
« on: May 24, 2012, 05:45:48 AM »
Are the inputs and outputs on the FMD1616-10 opto-isolated?

86
Technical support / Re:FMD1616-10 step stop issue
« on: May 24, 2012, 05:36:25 AM »
I have been using physical input.

I am using RS 232 link for communication no Ethernet.

If I have electrical noise problem, why can I trigger stepstop with physical input during ramp to stop ok but not during maximum speed portion of same stepmove?

I will send program this AM for your comments. Very simple program.
 

87
Technical support / FMD1616-10 step stop issue
« on: May 23, 2012, 09:22:51 PM »
I have a program that uses stepmove command. Stepspeed is set before stepmove. I need to stepstop the move at any time in the move. I have done this many times before with other Triangle boards.

The step move will start and if I issue stepstop while step move is still ramping the step move will stop when step stop triggered.

If the stepmove reaches full speed (not in ramp) stepstop will not stop the move. In addition if I am watching program from my PC, the PC is kicked off (looses communication link) until the stepmove completes the 5000 step move, then it starts up again.

I have tried many versions and removed all from program to just have bare minimums with same result. I think the ladder scan is stopping during the maximum speed portion of the move and resuming when the move terminates - why?

Any ideas?

88
Technical support / Re:Different than documentation FMD1616-10
« on: May 23, 2012, 07:46:01 AM »
I appreciate you clearing this issue up. Thanks for the fast reply.

89
Technical support / Different than documentation FMD1616-10
« on: May 22, 2012, 11:14:08 AM »
I have a FMD1616-10. The manual shows the common for the outputs as pin 9 of the output connector. The boards I have only have 8 points on the output connector.

I assume that the common is now tied to 0VDC on the board and has been removed from the connector. Am I correct in this?

If I am correct, it would be good to update the documentation to reduce confusion.

90
Technical support / Re:Stepper ramp question
« on: May 16, 2012, 07:21:53 AM »
Is it possible to issue a STEPSPEED of zero to stop the move and maintain the current STEPMOVE command and then issue a STEPSPEED  back to the desired speed to resume the move? It would simplify my program task if it can be done.
Thanks

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