Hello All,

 I need to configure ASi communication between CM 1243-2(master-3RK7243-2AA30-0XB0) with IFM DTA 100 (RFID system) (Read/write head With integrated AS-i slave profile 7.4).

As per IFM support, GSD file is not required and can be configured as universal module. So I have configured as universal module and selected profile as 7.4 (IO,ID).

 ID1,ID2 is not mentioned in their document. So i kept as F,F. Its only shows 4AI. With that am able to read the value from IFM.

But I need to write value. I have tried 2-3 combination of ID values. But device is showing error.

In IFM document also (http://www.ifm.com/products/gb/ds/DTA100.htm) nothing mentioned about ID1,ID2.

Any suggestions ?

Hello vipz;

A GSD file is required to introduce a Profibus-DP slave in a master,s profibus configuration; a GSDML file does the same for a Profinet system.

As-i works in a very different way, as you can see if you look at your As-i master documentation, and does not use GSD files for slave identification.

Manual AS-i Master CM 1243-2 and AS-i Data Decoupling Unit DCM 1271 for SIMATIC S7-1200

https://support.industry.siemens.com/cs/fr/en/view/57358958

Most of the data transmitted over As-i is digital (binary inputs and outputs). Wgen you want ot use it to read/write analog values (as in the case of a DTA100, you have to use SFB52/53 to read and write data records, in your program; see the following extract ofrom the manual cited above):

Calls

The following blocks are used for reading and writing data records:

Table: Blocks for reading and writing data records

You will find these blocks in STEP 7 in the operations list under "Advanced operations, distributed I/O"

.

Here is a copy of an similar answer that was provided on another forum, a few years ago, with some details that could help you (take into account that the thrad considered a S7-300 As-i master) :

http://www.plctalk.net/qanda/showthread.php?t=37240

Hope this helps,

Daniel Chartier

Dear DChartier,

 Thank you for sharing the link and details.

My first doubt is on “Slave Configuration”. Kindly see the attached pic. 7.4.F.F is the configuration setting, as per that configuration is 4AI. To write the value, configuration should be DO/AO , correct ?

Update:

In the ASI manual it is written that,

7.2.3.20  Write AS-i slave analog output data (Write_Analog_Output_Data)- Pg 97

So if i want to write to AO, it is not possible if i configured the slave details in TIA ? (WRREC − Index 82)

Kindly advice..

Hello Vipz;

When the manual of the Siemens As-i masters (like your CM 1243-2) discusses the configuration of the As-I slaves, it means that either you can try settong them up as you have, or you can configure them directly oin the HWCopnfiguration editor.

See this from the CM 1243-2 maniual:

Access without configuration of the AS-i slaves with STEP 7

If you have not configured the AS-i slaves in STEP 7, you can access the AS-i digital values via the I/O area of the SIMATIC. In this case STEP 7 automatically activates the "System assignment" parameter which causes a 62 byte long I/O area to be reserved in the SIMATIC.STEP 7 basic configuration (Page 38)

Transferring AS-i analog values

You can access analog data of an AS-i slave via cyclic services if you have configured this AS-i slave in STEP 7 as an analog slave (see section "Configuring AS-i slaves (Page 40)"). If you are not configuring any analog slaves, you can only access the data of the AS-i slave via the acyclic functions (see section "Accessing AS-i analog data via acyclic services (Page 52)").

I suggest you have a look at this sample program provided by IFM for a CP 343-2 As-i master (on a S7-300 CPU).  You should be able to follow the steps even with TIA Portal. Please remember the example uses S7-300 SFCs, you need SFB52/53 in your project.

Look for this entry: Program sample Step7 CP343 ASI Master with RFID DTS125

In the followingh link: https://www.ifm.com/download/read_webidsys_en 

Hope this helps,

Daniel Chartier

Hello vipz

Do you get the anwser about how to use DTA100 to write ?

I get the same question about it. I thiink the FB(WRREC/REREC) Index should be 27/28,but I get nothing in datasheet.