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Modbus RTU\ Modbus TCP

Created by: khaoula at: 9/15/2018 6:58 PM (5 Replies)

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9/15/2018 6:58 PM	Rate (0)
khaoula Posts: 9 Rating: (0)	Bonjour, je suis entrain de réaliser un projet de supervision en utilisant l'automate S7-1200 pour récupérer les données des deux centrales de mesure SENTRON PAC 3100 et PAC 3200, il faut dire que SENTRON PAC 3100 parle Modbus RTU et l'autre parle Modbus TCP . Est ce que c'est possible de faire les deux communication en même temps avec un seul automate? si c'est possible comment faire? sinon donnez moi une autre alternative pour faire tout ça!! Merci d'avance
khaoula Posts: 9 Rating: (0)
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9/17/2018 1:19 PM	Rate (0)
Pittiplatsch Posts: 1368 Rating: (128)	Hello, this forum is English language. Please can you translate your problem? Thanks
Pittiplatsch Posts: 1368 Rating: (128)
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9/17/2018 1:39 PM	Rate (0)
8Noodles Silver Member Joined: 8/3/2017 Last visit: 6/11/2024 Posts: 1086 Rating: (53)	Translation from khaoula post: khaoula Hello, I am carrying out a supervision project using the S7-1200 PLC to retrieve the data from the two SENTRON PAC 3100 and PAC 3200 power plants, it must be said that SENTRON PAC 3100 speaks Modbus RTU and the other speaks Modbus TCP . Is it possible to do both communication at the same time with a single PLC? if it's possible how? otherwise give me another alternative to do all this !! thank you in advance
	Please, check out the forum search to find already existing topics regarding your issue and to get some hints.
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9/17/2018 2:02 PM	Rate (0)
Duris_I Diamond Expert Joined: 4/28/2015 Last visit: 3/26/2025 Posts: 10837 Rating: (836)	Hello, there are more possibilities how to solve this. 1. attach CM/CB module to S7-1200 CPU (if have free slot left to CPU for CM mosule or slot on CPU for CB board) and communicate with PAC via MB RTU. PAC with MB TCP can be in same time solved via Profinet port of S7-1200 CPU via MB TCP protocol. 2. have some Gateway that converts MB TCP to MB RTU protocol, via this chanel you can communicate with MB TCP to Gateway and Gateway then convert protocol to MB RTU and PAC. With PAC with MB TCP you can communicate also via Profinet port as in previous situation. In this solution you can communicate to both devices via Profinet port of CPU, you don't need serial module/board.
	With best regards... Ivan Duris Flight: OMICO
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3/4/2019 12:04 PM	Rate (0)
khaoula Posts: 9 Rating: (0)	thank you very much.
khaoula Posts: 9 Rating: (0)
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3/4/2019 12:48 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello, a PAC4200 can act as gateway. You can connect several PAC3100 to it and request all devices with ModbusTCP. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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