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Multiple connections at a time - Open Modbus TCP Driver 2XV9450-1MB00

Created by: memet at: 10/7/2008 5:41 PM (4 Replies)

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10/7/2008 5:41 PM	Rate (0)
memet Regular Member Joined: 10/7/2008 Last visit: 4/17/2014 Posts: 27 Rating: (0)	Hello all, We have been using multiple CP-341's and modbus licenses for connecting peripheral devices (asRTU master) and DCS systems (as RTU slave) in our projects so far. In my current project, I need 1 Master and 3 Slave connection. My question is: If I buythe Modbus TCP license and one CP-343 Lean, one 5-Channel Ethernet Hub, Four Ethernet-to-RS485 Converters; Will I be able to have 3 Slave and1 Master connections? Can this driver operate in both modes on the same CP ata time,over a hub to different IP addresses? Also when using this driver, Is it possible to use the same ethernet CP for connection to an HMI terminal? Another question is, once I buy this software andinstall the associated FB etc on my PG, can I use it on another CP-343? Do I need to buy the driver again for each project? Any help appreciated, thanks in advance. Memet

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10/8/2008 10:56 AM	Rate (0)
Wüstenräuber Silver Expert Joined: 10/3/2008 Last visit: 11/29/2019 Posts: 709 Rating: (83)	Hello memet, Idon't know whether usage ofconverters will work well. I never tested it. Your second question: Yes, it's possible to use the same CP for modbus communication and for other communications (HMI etc.). You have to buy 1 license for each CPU. (But there is also a sacle of discount.) Wüstenräuber

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10/9/2008 11:57 AM	Rate (0)
Wüstenräuber Silver Expert Joined: 10/3/2008 Last visit: 11/29/2019 Posts: 709 Rating: (83)	Hello memet, I asked a colleague because of the usage of the converters: it works! You can use CP341, converters, CP343-1 and OpenModbusTCP and the telegram transfer will work. A hint: OpenModbusTCP supports function codes 3,4 and 16 (write/read Holding Register and read Input Register). Wüstenräuber

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10/7/2015 4:22 PM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 5154 Rating: (115)	New question published by RIAN Che is split to a separate thread with the subject How many connections are posssible to a single CP 343-1 lean?. Best regards Min_Moderator

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11/3/2017 1:55 PM	Rate (0)
Jen_Moderator Moderator Joined: 6/19/2017 Last visit: 12/11/2019 Posts: 3687 Rating: (47)	New question published by AKT1988 is split to a separate thread with the subject Is there any block in simatic manager like MB_Server in TIA portal which allows to connect PLC using modscan?. Best regards Jen_Moderator

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