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S7 1214-C, with master module DP CM 1243-5

4/26/2013 9:37 AM	Rate (0)
Import-User-1 Posts: 3609 Rating: (29)	Import of a technical question from user VICTOR_fer VICTOR_fer Hi, I'm setting a S7 1214-C, with master module DP CM 1243-5. The firmware verson are v3.0 and v1.0 respectively. I need to communicate with a Profibus Slave from other brand. I have set the network properly because I communicate OK with the slave, I read/write OK information that give me the slave, via de PIW and PQW . To obtain determinate information, I need to use the functions SFC14 (DPRD_DAT) and SFC15 (DPWR_DAT). But they don`t work. The problem is that although the conditions of the function call occur, these functions do not run, giving an error value Unregistered (-3624 in RET_VAL register). I have test it with and without CM module connected to the CPU, and behavior is the same. Can someone help me?
Import-User-1 Posts: 3609 Rating: (29)
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2/28/2014 2:30 PM	Rate (0)
aloudermilk Posts: 1 Rating: (0)	The S7-1214 has a very large image table. You do not need to use SFC 14 and SFC 15 to write to the devices. If you need a consistent block of data then there are other ways to do it. You are correct in saying that SFC14 and SFC15 do not work. Contact the guys at Siemens support. 1-800-333-7421 and they will show you how to write a consistent block of data to an I/O address. it involves writing an FC with this code inside: POKE_BLK(area_src:=#area_src, dbNumber_src:=#Source_DB_Number, byteOffset_src:=#Source_ByteOffset, area_dest:=#area_dest, dbNumber_dest:=#Dest_DB_Number, byteOffset_dest:=#Dest_Byte_Offset, count:=#Count); That is the only way to write a consistent block of data to a field I/o device in the S7-1200 series that I am aware of. I exported the block and am attaching the source code fc100.scl that you can import into your project. I has decent documentation so you should be able to figure it out. Attachment FC100.zip (166 Downloads)
aloudermilk Posts: 1 Rating: (0)	Last edited by: aloudermilk at: 2/28/2014 2:31 PM
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