I know nothing about PLC-CX3G except for some of the videos ive been studying about using melsoft GXWorks2 for programming the PLC I have. I have gotten it to light up 4 leds on the plc in sequence, Y0, Y1, Y2 and Y3 with timers that count 5 seconds and turn on the next led, and then the leds turn off again in reverse sequence. But the thing is that I thought that meant that the actual output terminal or contact (not sure what the proper name is) would also be sourcing current/voltage from them. But when I put the voltmeter at each terminal (when its led is lit obviously) and the other lead to GND, I get no voltage.
Is it something in the program that differentiantes LEDs from actualy terminal outputs that Im missing? I come from an arduino background where whenever you set pin 13 high for example, the LED on pin 13 lights up and there is also a 5V potential across that pin and GND. So Im confused as to why it doesnt work the same in the PLC.
Is it something in the program that differentiantes LEDs from actualy terminal outputs that Im missing? I come from an arduino background where whenever you set pin 13 high for example, the LED on pin 13 lights up and there is also a 5V potential across that pin and GND. So Im confused as to why it doesnt work the same in the PLC.
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