7/5/2009 8:53 PM | |
Posts: 37 Rating: (0) |
Hi.... Thanks for your reply... It is new one i am trying newly.. Tx and Rx it is not getting on only SF is showing... What may be the problem in my case |
7/8/2009 3:38 PM | |
Joined: 9/27/2006 Last visit: 7/26/2024 Posts: 12270 Rating: (2676) |
Hello mankar; The message in the diagnostic buffer is requesting some hardwired handshake signals. You are not providing them. Trusting the diagnostic buffer is a wise step: maybe you should investigate the issue? Have a look at the following diagram for RS-232 connections between a CP 341 V.24 interface and a 9-pin communication partner: http://support.automation.siemens.com/WW/view/en/218255 It comes from the following FAQ showing various Siemens serial CPs' connections on RS-232. http://support.automation.siemens.com/WW/view/en/218255 The reason that the SF LED is out is because the minimal electrical wiring for the CP is now satisfied. but there is no transmittal or reception because of missing auxilliary signals. Hope this helps, Daniel Chartier |
Last edited by: O_Moderator at: 9/16/2010 2:36 PMlink edited Last edited by: dchartier at: 7/8/2009 3:40 PM |
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