valerianlin

Hi all, I am fairly new to PLC programming, and just have a simple program regarding an unlatching input. In the picture below, I have STARTCOIL going to the set instruction for a single acting cylinder, LOCATOR_F. My problem is that once the STARTCOIL is actuated, it stays on, and I cannnot use the RSET instruction on LOCATOR_F. How would I modify the program to make the STARTCOIL pulse once to set the  SET bit, but after that, there is no powerflow through STARTCOIL. In short, I'd like to stimulate a non-latching push button. I would appreciate any help. Thank You

Hi all, I am fairly new to PLC programming, and just have a simple program regarding an unlatching input. In the picture below, I have STARTCOIL going to the set instruction for a single acting cylinder, LOCATOR_F. My problem is that once the STARTCOIL is actuated, it stays on, and I cannnot use the RSET instruction on LOCATOR_F. How would I modify the program to make the STARTCOIL pulse once to set the  SET bit, but after that, there is no powerflow through STARTCOIL. In short, I'd like to stimulate a non-latching push button. I would appreciate any help. Thank You

Hi all, I am fairly new to PLC programming, and just have a simple program regarding an unlatching input. In the picture below, I have STARTCOIL going to the set instruction for a single acting cylinder, LOCATOR_F. My problem is that once the STARTCOIL is actuated, it stays on, and I cannnot use the RSET instruction on LOCATOR_F. How would I modify the program to make the STARTCOIL pulse once to set the  SET bit, but after that, there is no powerflow through STARTCOIL. In short, I'd like to stimulate a non-latching push button. I would appreciate any help. Thank You

Hello, attached below I have a simple program that once the input is pressed, the single acting solenoid valve will actuate. The problem is the solenoid does not actuate once I press the pushbutton, and can see that there is powerflow through the button to the solenoid, but it does not turn on. However the solenoid actuates when I force it or set it on. Is there something wrong with the wiring ? Or is it the programming itself?  For wiring, I have the red wire from the solenoid going to V+, the black going to the PLC output card, and the common of the plc output card to V-. It seems simple enough but I cannot figure it out. Thanks

Yes I'm sure that I am using the  XW2Z-500S-CV cable with the same pinouts.  

Yes basically I'm testing it on two computers. My newer laptop does not have a serial port so I'm using that Sabrent, and on the older computer it has a male 9 pin serial port. Both yield the same results in terms of the COMMS indicator lighting up. 

I have downloaded the 64 bit drivers for the sabrent usb converter, and I currently don't have any 32 bit computers available (I have vmware, I may be able to try that). The thing is with the XW2Z-500S-CV cable is that I was given those cables that the school had used a couple years back, and the way they did it was just to connect it the way I have now. I have asked them and they are not sure either. They did have windows XP back then but since I have the latest cx-programmer version that should not be a problem right?  

Have tried on both windows 8 64bit and windows 7 64 bit. Using the latest trial version in CX-programmer.

1. Yes using auto online/direct online, have also tried creating a new project, selecting the correct CPU and network setting  2. Com port is correct, I have tried multiple usb slots, installed all the correct drivers (Prolific usb to serial) 3. Dip switch is on number 5. Seems when I turn it off the COMM indicator goers off so I leave it on.

Hi Jay, Thanks for replying. It looks like I'll have to see what cable I'm using because it seems a standard serial cable will not work based on the omron pinout you just sent me. Pin 5 has already been turned on I guess the problem lies with the third party cable I'm using. Thanks for replying will update when I get back to school. 

Hello,I am fairly new to PLCs and have little experience with them so I thought if anyone here could help it would be great. The project that I have been given involves the OMRON CS1g- CPU 43 provided by the school. Once I plug in the power supply, the ERR/ALM red indicator lights up right away without any of the other indicators other than RDY from the CPU and POWER from the power supply. First I have tried using a third party serial to usb cable to connect from my laptop to the plc and that did not work, I got a PLC failed to connect. I have tried a direct serial connection from the PC to the PLC using an RS232 Dsub 9 pin female to male and have tried auto online/direct connect on an older computer with a serial port, and after auto searching for a while the error comes up which says failed to connect to the pLC. I Googled the ERR/ALM indicator and found out that it was a fatal error however am not sure which one because I can't even connect the PLC to the computer properly. I have tried at least 3 other PLCs all of which are the same model but to no avail. They all have the same problem. I should mention these models are quite old they have been sitting in the closet for god knows how long. My suspicion is that I will need to get OMRON's CS1W cable for it to work since that one has the correct drivers however it is a couple hundred bucks.Anyways my question is does this fatal error prevent me from properly connecting to the PC? Is there a possible remedy? I'm running a bit behind schedule so I'd appreciate anyone help.Thank You