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| 3/18/2013 8:01 PM | |
Joined: 11/22/2008 Last visit: 10/28/2024 Posts: 40 Rating:
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Dears How can read and write R paramters to PLC. at 840d sl system I have create DB with "Ncvar selector" and also used FB2 at OB1. and Modified OB100 Nckomm = 1 But still can not read R parameter. Waiting your response. AttachmentOB and Db.zip (210 Downloads) |
| 3/19/2013 11:17 AM | |
Joined: 10/27/2009 Last visit: 3/15/2024 Posts: 455 Rating:
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Hi, You need to call the parameter "Addr1" as a STRUCTURE. It's recommended to use the symbolic style, eg. "NCVARDB".C1_RP_rpa1_1 (need to declare Your DB120 as "NCVARDB" and use the name of thevariable-structure for the R-Parameter) make sure to keep the Start-Bit until You get any response from FB2 (Error or NDR) here's a sample as well. AttachmentRPA_readwrite.AWL - Editor.pdf (408 Downloads) |
Last edited by: O_Moderator at: 3/19/2013 11:18 AMhope that helps |
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