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using cp341 rs232 ascii with s7400 h cpu

Created by: telin at: 10/29/2010 9:46 AM (8 Replies)

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10/29/2010 9:46 AM	Rate (0)
telin Posts: 8 Rating: (0)	Dear friends, I have to use cp341 rs232 (ascii) modul connected to et200m dp bundle modul with s7400 h cpu. This modul (cp341) working with s7300 cpu. I carried the program from s7300 to s7400. But it is not working in s7400. I don't understand why? Do you use before like this? What do i have to do? Regards
telin Posts: 8 Rating: (0)
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10/29/2010 10:21 AM	Rate (0)
smiffy Platinum Expert Joined: 1/17/2007 Last visit: 3/10/2025 Posts: 1557 Rating: (540)	Did you check the LADDR (hardware address) for the CP? In the S7-400 system it will (I suspect) be a different value to the one in the S7-300 system. You get this value from looking at the hardware configuration. What is the STATUS value of the P_SND_RK / P_RCV_RK FB call?
	Programming today is the race between software engineers building bigger and better idiot proof programs, and the universe producing bigger and better idiots. So far, the universe is winning...
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10/29/2010 10:58 AM	Rate (0)
telin Posts: 8 Rating: (0)	LADDR is the same the hardware adress. The status of P_SND_RK and P_RCV_RK are 0000hex so there is no error. For the test i give the trigger of send manually and try many times. But only one tme i can see the receive oeration. The receive counter increase to one and only one character is received. It is interesthing. I don't understand.
telin Posts: 8 Rating: (0)
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10/29/2010 11:04 AM	Rate (0)
smiffy Platinum Expert Joined: 1/17/2007 Last visit: 3/10/2025 Posts: 1557 Rating: (540)	Strange. I have used CP341 in both S7-300 and S7-400 using the same software and have never had any issues. I might be helpful if you could dump the instance DB's for your P_SND_RK and P_RCV_RK FB's as these contain some data that may aid diagnosis. Your project would also be useful. Could you upload it please?
	Programming today is the race between software engineers building bigger and better idiot proof programs, and the universe producing bigger and better idiots. So far, the universe is winning...
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10/29/2010 3:11 PM	Rate (0)
telin Posts: 8 Rating: (0)	You can see my project in attachment file. Could you look and inform, please? Thanks Attachment cp341 with s7400.zip (107 Downloads)
telin Posts: 8 Rating: (0)
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This contribution was helpful to 1 thankful Users nguyenminhee

10/29/2010 5:52 PM	Rate (0)
gre_m Posts: 947 Rating: (45)	Hello telin Laddr CP341 located in the area image of I / O. You should either reduce the size of the imageI/Oor changeLaddr, so it was outside the area of the image. Alternatively, you can disable update Laddr in OB1. I modified you attachement with reduce i/o image Attachment modified.zip (133 Downloads)
gre_m Posts: 947 Rating: (45)
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10/29/2010 7:58 PM	Rate (0)
telin Posts: 8 Rating: (0)	I am sorry. This is the correct file. I am sure. Attachment cp341 with s7400.zip (122 Downloads)
telin Posts: 8 Rating: (0)
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10/29/2010 7:59 PM	Rate (0)
telin Posts: 8 Rating: (0)	The adress of laddr is in the range of image io for this cpu.
telin Posts: 8 Rating: (0)
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10/31/2010 5:16 PM	Rate (0)
gre_m Posts: 947 Rating: (45)	I attach your modified (changed) project. See chahges in CPU-properties
gre_m Posts: 947 Rating: (45)
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