Current Detection Through RS485 Port in PLC - CR4 Discussion Thread

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Anonymous Poster	Current Detection Through RS485 Port in PLC 11/29/2010 1:04 AM
	Can we detect a current reading from Siemens 250kw master drive through RS485 communication in Siemens PLC S7? because drive is working with RS485 port communication. if anybody know please guide.
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Anonymous Poster	#1 Re: Current detection throgh RS485 port in PLC 11/29/2010 6:18 AM
	Yes, you can. please read the literature/catalogue of drive for output parameter.
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JRaef Guru Join Date: Sep 2006 Location: California, USA, where the Godless live next door to God. Posts: 4665 Good Answers: 804	#2 Re: Current Detection Through RS485 Port in PLC 11/29/2010 2:10 PM
	Siemens has a form of direct communications to their own drives from their own PLCs called USS protocol, using the serial comms port, which is RS-485 based. Get hold of a copy of the USS protocol and you can easily integrate the command and monitoring functions into your Step 7 program. It's a free download from Siemens, but only applies to Step 7 to Siemens VFD connections. __________________ All I every really wanted to be, was... A LUMBERJACK!.
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