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Topics - Ken

Pages: [1]
1
Technical support / PID Tuning
« on: March 08, 2002, 01:47:10 PM »
Does anyone know of a good literature reference on the web or otherwise for tuning PID.
Thanks,
Ken
 ::)

2
Technical support / lowest value produced by pulsefrequency
« on: March 14, 2002, 01:36:03 PM »
What is the lowest possible value that can be generated by pulsefrequency.  If it is one, and a person needs slower signal representation, I assume you would have to use a highspeed counter?

Thanks,
Ken :-/

3
Technical support / Pulsewidth and Pulseperiod
« on: March 15, 2002, 07:51:13 AM »
What is the difference between pulsewidth and pulseperiod.  I think that pulsewidth measures how much time lapses from one signal to the next but what does pulseperiod measure?
Thanks,
Ken

4
Technical support / Autocad block drawings
« on: April 03, 2002, 01:38:08 PM »
Hello,
Does anyone have autocad drawings of the T100MD1616 and the EXP 4040?  I do not want detailed drawings, just some block drawings showing mount locations board size and overall component thickness, etc.  I am designing an enclosure and would like the drawings to help expedite this task.

Thanks,
Ken
 :-/

5
Technical support / Floating Point Math available soon?
« on: June 26, 2002, 11:04:40 AM »
Rumor has it that floating point math will be available for the MD series soon.  Is it something that will be built into a newer version of TRI logic?  Will there be any additional cost to make those of us who have older equipment / software?  Just curious.

Thanks,

Ken Talley

6
Technical support / need to slow input or recognition speed on 100md+
« on: September 27, 2002, 11:25:24 AM »
I am using the following custom function once upon startup to set some values.  My problem is that I want to increment the values one at a time or at least slow it down so that I can reach a specific integer.  The inputs are switches, and the plc is scanning so fast that I cant increment as slow as required.

Thanks in advance,
Ken


DM [50] = 1


SETLCD 0,1,CHR$(1)
SETLCD 1,1,"GPM CALIBRATE"

@10 REFRESH
IF TESTIO (SelectUp) = 1
DM[111] = DM[111] + 1
ENDIF
IF TESTIO (SelectDn) = 1
DM[111] = DM[111] - 1
ENDIF
SETLCD 2,1,STR$(DM[111],4)
IF TESTIO (Select) = 1
DM[50] = DM[50] + 1

ENDIF

IF DM[50] = 1
GOTO @10
ENDIF


SETLCD 0,1,CHR$(1)
SETLCD 1,1,"FPM CALIBRATE"

@20 REFRESH
IF TESTIO (SelectUp) = 1
DM[110] = DM[110] + 1
ENDIF
IF TESTIO (SelectDn) = 1
DM[110] = DM[110] - 1
ENDIF
SETLCD 2,1,STR$(DM[110],4)
REFRESH
IF TESTIO (Select) = 1
DM[50] = DM[50] + 1
ENDIF



IF DM[50] = 2
GOTO @20
ENDIF


@30 REFRESH
IF TESTIO (Selectup) = 1
TOGGLEIO FPM300
ENDIF
IF TESTIO (FPM300) = 1
DM [106] = 300
SETLCD 2,1,"FPM300"
ELSE
SETLCD 2,1,"AUTO  "
ENDIF
REFRESH
IF TESTIO (Select) = 1
DM[50] = DM[50] + 1
ENDIF

IF DM[50] = 3
GOTO @30
ENDIF

7
Technical support / power on when no supply power
« on: September 30, 2002, 11:42:47 AM »
My situation is this.  When there is no power to the plc but I do have loads connected to terminals 1-8 which are of course hot the plc acts irratic yet does clear up when power is connected to the plc.  My concern is that it closes the ciruit under a no power situation as the loads mentioned are powered independently.  Is this normal?

Thanks,
Ken

8
Technical support / Loss of network connection and trilogi freezing
« on: October 29, 2002, 08:38:31 AM »
Hello,

I have been working on a project now for roughly a year using two 100md+'s in a master slave configuration.  When online monitoring or transferring a new program to the master plc I will frequently, (once every 7-10 times when transferring, and everytime when online monitoring if left long enough) encounter "loss of network connection" or the trilogi software will freeze.  I am connected to the master plc via the supplied DB9 cable.  My laptop is running Windows 2000.  Additionally it seems that sometimes the PLC has not recieved the last program update sent unless it is sent twice?  I sometimes must send new code to the plc 20 time a day debugging the program.  What am I doing wrong?

Thanks,
Ken

9
Technical support / current or voltage sensing relay circuit
« on: January 13, 2003, 07:11:23 AM »
Hello everyone,

Has anbody ever had to assemble a current or voltage sensing relay.  My situation in which I require it is as such.  I have a master slave configuration wired together using a four conductor cable.  Two of the wires are for RS 485 communication and the other two are power from the vicinity of the slave feeding the master.  The current is currently switched on the hot side of the master PLC.  In other words +12VDC from the area of the slave enter the comm/power cable and connect to a SPST switch then to the PLC and the ground or 0VDC is fed back to the vicinity of the slave via 1 of the remaining 3 conductors in the cable.  What I need to do is sense this current and drive a relay that powers the slave.  I hope this makes sense, if anyone can help me out it would be greatly appreciated.  

Thanks,
Ken Talley

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