10/13/2008 10:59 AM | |
Joined: 4/24/2006 Last visit: 9/23/2024 Posts: 8742 Rating: (1168) |
Hi smiffy, Here are some links to manual: http://support.automation.siemens.com/WW/view/en/1137419 http://support.automation.siemens.com/WW/view/en/1188835 Here you can download ptp Parameter software http://support.automation.siemens.com/WW/view/en/27013524 When you install, there are some Example projects installed. I think you need a PtP connection in NETPRO. Best regards, Wizard |
10/14/2008 7:54 PM | |
Joined: 1/17/2007 Last visit: 8/21/2024 Posts: 1545 Rating: (537) |
Thanks, I have a connection setup now. However, I cannot get it to transmit or receive data. The connection (number 1001) is reported as open in Netpro, but there is no activity on the TX LED on the CP. All other LED's are off (i.e. no fault LED's). I have an RS485/RS422 module and an RS232 module. I have tried both and neither work. The status code from the BSEND FB call is 1. Find attacheda screenshot (CP441idb.zip) of the BSEND instance data block (columns are from left to right Address,Decalration,Name,Type,Initial Value,Actual Value & Comment). AttachmentCP441idb.zip (298 Downloads) |
Programming today is the race between software engineers building bigger and better idiot proof programs, and the universe producing bigger and better idiots. |
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10/20/2008 2:06 PM | |
Joined: 4/24/2006 Last visit: 9/23/2024 Posts: 8742 Rating: (1168) |
Hi, |
10/20/2008 3:30 PM | |
Joined: 4/24/2006 Last visit: 9/23/2024 Posts: 8742 Rating: (1168) |
Hi, Is the cable correct? Who are you communicating with? Best regards, Wizard |
10/22/2008 1:03 PM | |
Joined: 1/17/2007 Last visit: 8/21/2024 Posts: 1545 Rating: (537) |
That was my original thought as well, but I was informed via this forum thatthe BSEND on its ownis allowed if the protocol for the CP is set to ASCII (see the following thread). /tf/WW/en/Posts/20495 However, all the documentation I can find seems to agree with you in that BSEND needs a matching BRECV at the other end. This is not possible for me as the CP is communicating via a specific protocol (which I am writing a my own SCL block) to an external piece of equipment. However, it does seem strange that the CP441 should be different, as other CP's have special FB/FC for generic (PtP) communications (340 uses P_SEND/P_RECV, 341 uses P_SND_RK/P_RCV_RK).I have used these CP's for generic (PtP) communications and they work fine with these PtP specific FC/FB. I assumed that the 441 would also have a specific FB/FC for generic (PtP) communications. Alas, I cannot seem to find this out in the documentation. So could someone please confirmwhat FC/FB I should be using for generic (PtP) communications on a CP441? I have tried experimenting with the handshaking configuration, but this had no effect, even if it was turned off. I am convinced it is not a hardware issue, or parameterisation issue. |
Programming today is the race between software engineers building bigger and better idiot proof programs, and the universe producing bigger and better idiots. |
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10/23/2008 11:05 AM | |
Joined: 4/24/2006 Last visit: 9/23/2024 Posts: 8742 Rating: (1168) |
Dear smiffy, I'm glad it's functioning now. Thanks for feedback. Best regards, Wizard |
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