Hi first of all ,thanks for all your effort,
My problem is that I cant communicate to my PLC Micrologix1000 via DF1Comm driver. When I run the AdvancedHMI project, I get an error saying "INVALID VALUE RETURNED. Failed to open COM4" on all the objects. I noticed that he had the DF1Comm object set to COM4 in his PDF, but COM2 on his channel 0 settings, so I tried setting the DF1Comm object to COM2, and then got this error: "INVALID VALUE RETURNED! No response, check COM settings".
Note : The computer I use it doesn't have physical serial port instead I use PL-2303 USB-to-Serial Bridge Controller to connect my PLC.
Thanks for your concern,
Is RSLinx running at the same time and using the serial port?
Thanks for fast respond,
When I've download program to PLC after that I shut RSLinx down yet more I change the serial COMX port for example : "COM3 to COM4" just to prevent conflicting . No chance yet.
Any help would be appreciated.
Note: I am running Windows 7 pro 64bit ,Visual studio 2010 , AdvancedHMIv321, Micrologix1000
What are the settings in RSLinx that allows you to communicate:
My RSLinx settings :
Configure RS-232 DF1 Devices
Device : PLC-CH0
Comm Port : COM4
Baud Rate : 9600
Parity : None
Stop Bits : 1
Error Checking : CRC
Protocol : Full Duplex
The one setting that doesn't seem quite right is PLC-CH0 . That indicates a protocol for the PLC5, which is not supported by the DF1 driver with AdvancedHMI. Will RSLinx work if you use SLC-CH0/Micro/PanelView ?
Yes, I've used this too . "if you use SLC-CH0/Micro/PanelView? "
I've uploaded some capture pics. If you have some time please check them. They might give you some clue.
Here are the pics link:
I can see in the picture the DF1Comm is set to COM2, but RSLinx uses COM4. You will need to use the same COM port that RSLinx works with and be sure RSLinx is completely shut down. Check the component tray to make sure RSLinx is not just minimized
I use same COM port for DF1Comm and RSLinx .Now they all set to COM4. I am sure that RSLinx shut it down. But same as before I am still getting error "No Response Check COM Settings" .
I write simple program for PLC " Start button "B3:0/0" , Stop Button "B3:0/1" ,Motor "O:0/0". I use MomentaryButton for Start , Stop button and PilotLight for Motor.
Pulling Data from PLC ; Set to MomentaryButton --> PLCaddressClick = B3/0 " B3/1 for Stop".
Set to PilotLight-> PLCaddressValue = O:0/0 "Motor address"
I think if my COM port does not properly work then How I upload program to my PLC .
I am sorry that I've already taken your lot time so far but I cant really find enough documents to benefit.
By the way , this will be my last bother :).
Thanks a lot for your concern..
It's no bother. I know serial communications can sometimes be a real hassle to sort out. This is what I would do to see if communications with the PLC are occuring:
Download this serial port monitor tool:
Create a new session using COM4 and Request View
Start up RSLinx with RSWho and watch to see if there are packets being exchanged
Shut down RSLinx and startup AdvancedHMI to see if any packets are being exchanged
I used Serial Port Monitor for COM4 port ,also got two pics for one for AdvancedHMI port monitor second one for RsLinx port monitor.
AdvancedHMI BaudRate is AUTO but when I change to Manual like BaudRate = 9600 , VS 2010 kind of crashes.
Serial Port Monitor shows AdvancedHMI BaudRate = 38400 but I had changed as manual RSLinx BaudRate 9600 sure when I changed RSLinx BaudRate like 38400 doesnt work.
I mean that this BaudRate might be our real problem?.
Thanks anyway :)
Yes! Your are right, that is the problem. It was a known issue that I had forgotten about. It has been fixed, but the fix is part of the next release. If you view the code for DF1Comm,vb at line 96, this is the code that fixes the problem:
Private m_BaudRate As String = "AUTO"
<EditorAttribute(GetType(BaudRateEditor), GetType(System.Drawing.Design.UITypeEditor))> _
Public Property BaudRate() As String
Set(ByVal value As String)
If value <> m_BaudRate Then
If Not Me.DesignMode Then
'* If a new instance needs to be created, such as a different Com Port
If DLL(MyDLLInstance) IsNot Nothing Then
DLL(MyDLLInstance).BaudRate = value
Catch ex As Exception
'* 0 means AUTO to the data link layer
DLL(MyDLLInstance).BaudRate = 0
m_BaudRate = value
I've changed code for DF1Comm.vb at line 96. VB 2010 doesnt crashes any more when I change BaudRate from AUTO to 9600. But when I run project , on MainForm "MomentaryButton for start , PilotLight for Motor kind of freeze ofcourse errors show up on Buttons like "No response, check COM settings". Also , I check Com ports of RSLinx and AdvancedHMI DF1comm1 wtih Serial Port Monitor. RSLinx BaudRate is constant "BaudRate is 9600" but AdvancedHMI DF1comm1 BautdRate is not constant first is BaudRate is 9600 then BaudRate is being changed as 38400.
Another weird thing is, no matter what AdvancedHMI DF1comm1 COMX port is "ex. 1,2,3.." as soon as I run project errors shows up on Buttons as "No response, check COM settings".
So far no chance :) may be next version of AdvancedHMI will be much better for me.
Thanks for your time,
I have said before that "The computer I use it doesn't have physical serial port instead I use PL-2303 USB-to-Serial Bridge Controller to connect my PLC."
Have you ever tested AdvancedHMI DF1comm1 with PL-2303 USB-to-Serial Bridge Controller?. If you have ,does it properly work with AdvancedHMI DF1comm1?. if so, Could you recommend me good USB-to-Serial converter.
I want to find my mistake. I will.
Hi I've finally gotten cause of mistake that made me crazy. That was "PL-2303 USB-to-Serial Bridge Controller" converter.
I bought new one sure not the one has "Prolific chip " . This new " DIGITUS USB to serial adaptor, USB 2.0" realy get job done well.
Thanks a lot sir..
Log in to post a comment.