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Communication fault between a CP342-5 and an IM155-6DP

Created by: Taoufik01 at: 12/3/2021 5:46 PM (5 Replies)

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12/3/2021 5:46 PM	Rate (0)
Taoufik01 Posts: 6 Rating: (0)	Hello, I created an IM155-6DP v4.2 station that I connect in profibus with a CP342-5 V6.0.66. with STEP 7 V5.6 SP2 I have 2 problems. If I create an IM station with the GSD the communication does not work because the CP342-5 does not see the station. If I create the station with the catalog, it refuses compilation because it requires a DPV1 master. Would you have a solution to unblock my situation? Thank you in advance for your help! (google translate)
Taoufik01 Posts: 6 Rating: (0)
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12/6/2021 10:24 AM	Rate (0)
Towome Platinum Expert Joined: 7/9/2015 Last visit: 11/19/2024 Posts: 4028 Rating: (603)	Hi, if you use a CP342-5 you will need functions DP_SEND/DP_RECV for communication. Please check this FAQ: What should you watch out for when configuring a CP342-5 as DP master and why is it necessary to call the FC1 "DP_SEND" and FC2 "DP_RECV" functions in the user program of the CPU in order to transfer data? Regards, Towome
	If my post was useful, please rate me - if not, please tell me - thank you!
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This contribution was helpful to 1 thankful Users Taoufik01

12/6/2021 1:32 PM	Rate (0)
Duris_I Diamond Member Joined: 4/28/2015 Last visit: 11/19/2024 Posts: 10616 Rating: (828)	Hello, from your post isn't clear what HW is DP Master and who Slave. In master cfg you nedd add GSD of Slave, any ET200S CPU need have PB MAster module attached in case of master functionality. As was stated previously, you need call on CP342-5 HW DP_x blocks and define I/O areas as required.
	With best regards... Ivan Duris Flight: OMICO
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12/8/2021 7:06 PM	Rate (0)
Taoufik01 Posts: 6 Rating: (0)	Hello Towome, Normally, without the blocks FC1 et FC2, the bus fault indicator should not light up? Is there an error in HWCONFIG? Hello Duris_I, I did everything, GSD, I / O configuration .... The CP342-5 is masters. If in the CPU I take another PLC than the 313C with the CP342-5 I have'nt got compilation errors when taking the hardware catalog (HSP). Thank you for your answers, I am continuing my research. google translate
Taoufik01 Posts: 6 Rating: (0)
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12/9/2021 8:41 AM	Rate (0)
Wizard Diamond Expert Joined: 4/24/2006 Last visit: 11/19/2024 Posts: 8770 Rating: (1171)	Hello, The CP342-5 is a DPV0 master and the IM155-6 needs a DPV1 master. So I guess that is the problem. How can you tell whether your S7-300/400 master supports DPV1 functions? You need another master to use this slave. Best regards, Wizard

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12/15/2021 5:57 PM	Rate (0)
Taoufik01 Posts: 6 Rating: (0)	Hello, I managed to get my IM to work. Using the GSD files and programming FC1 and FC2 correctly it works. On the other hand, STEP 7, the hardware catalog does not work, you have to go with the GSDs. Thanks for your help!!
Taoufik01 Posts: 6 Rating: (0)
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