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Messages - nugrozt

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1
Technical support / Re:analog output
« on: July 29, 2010, 05:26:08 AM »
yes,.i have same problem with you guys
i have connect the 14 Vdc to Power supply I/O and Gnd, but when i measure the output current  between D/A #1, i get nothing

please help me

2
Technical support / Re:output control
« on: July 29, 2010, 05:16:22 AM »
i have problem with output DAC, i use the T-BASIC command SETDAC 1,2048 and connect a resistor (560 ohm) accross the output terminal D/A #1, when i measure the voltage between the resistor, it's just 4,7 V measured (in the manual book, it should have (560 ohm x 10mA= 5,6 V)?)
then, if i change output DAC with 4090,and the voltage measured is 4,9 V (why not 4,7 x 2 = 9,4 V)
was i wrong??

3
Technical support / Re:output control
« on: July 13, 2010, 02:25:47 AM »
thanks.,

i need to  control 3 different high voltage source with the same output control, is it ok if i parallel 1 output PLC (0-12 V) to 3 different high voltage source?

4
Technical support / output control
« on: July 12, 2010, 09:23:53 PM »
i have a problem in using PLC, my project is control high voltage source to control temperatur furnace.
control temperatur using high voltage source. the problem is how to use special output of TM100D+1616(such as:PWM,PID control,ANALOG OUTPUT) that can handling this program.
i need to control temperatur at certain set point(SP), if temperatur less than SP then high voltage source must increase the voltage to increase temperatur furnace. otherwise, decrease the voltage to decrease temperatur.
nb: to control the high voltage source needs 0-12 V, that related to 0-2kV output of high voltage source.

regard
nugros

5
Technical support / Re:keypad matrix to plc
« on: July 08, 2010, 12:36:51 AM »
yes, that's what i mean, i have a MD-HMI in my project. does it need any special program to use the input key function?

6
Technical support / keypad matrix to plc
« on: July 07, 2010, 08:22:34 PM »
 :)
hello support

i have some questions about input key using keypad matrix (usually embedded in LCD monitor/HMI device) to control variable in plc, such as entering set value, set timer, or to start/stop plc

how i can program the plc to communication with the keypad matrix?

thanks for your attention

7
Technical support / Re:Fluctuation in ADC readings
« on: June 17, 2010, 03:42:11 PM »
thanks for your answer.
i've reading the ADC input every 0.1s and after 10 count divided by 10, the reading using this syntax:
x=ADC(3)
x=x+ADC(3)
but there're still any fluctuation in my system.

i'll try to check up my wiring first. if it doesn't work, can i get the fillter analog (just like dave333 has)?

thanks :)

8
Technical support / Re:Fluctuation in ADC readings
« on: June 16, 2010, 08:03:02 PM »
i had the same problem as yours,dave.,
I had a problem with reading the input ADC, I made the DAQ using a thermocouple to read the temperature in the furnace, the problem I faced was reading the input ADC unstable from the thermocouple, the output voltage of thermocouple 10mv/deg. C, should be reading the input ADC linearly with increasing temperature, but that happens readings are volatile and unstable.
what should i do?using fillter?what fillter?

regard,nugrozt

9
Technical support / problem with reading input ADC
« on: June 16, 2010, 06:55:48 PM »
I had a problem with reading the input ADC, I made the DAQ using a thermocouple to read the temperature in the furnace, the problem I faced was, reading the input ADC unstable from the thermocouple, the output voltage of thermocouple 10mv/deg. C, should be reading the input ADC linearly with increasing temperature, but that happens readings are volatile and unstable

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