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( [id://3333]=superdoc: print w/replies, xml ) Need Help??
Protocol::Modbus is the module that you want to use. The documentation is very sparse, but the source has the info that you need. I gave it quick look and managed to get this going. I used the generic approach.
#!/usr/bin/perl -l use strict; use warnings; $|=1; my $proto = Protocol::Modbus->new( driver => 'TCP', transport => 'TCP +' ); my $request1 = $proto->request( function => 1, address => 1, quantity => 1, ); my $request2 = $proto->request( function => 2, address => 1, quantity => 1, ); my $request3 = $proto->request( function => 3, address => 1, uantity => 1, ); my $request4 = $proto->request( function => 4, address => 1, quantity => 1, ); print "=" x 60; print "Using unpack: \n"; print unpack ('H*', $request1->pdu()); print unpack ('H*', $request2->pdu()); print unpack ('H*', $request3->pdu()); print unpack ('H*', $request4->pdu()); print "=" x 60; print "Using Pretty-Print: \n"; print $request1; print $request2; print $request3; print $request4; print "=" x 60; print "stringify: "; print $request1->stringify(); print $request2->stringify(); print $request3->stringify(); print $request4->stringify(); print "=" x 60;

In reply to Re: Need help with Modbus by Khen1950fx
in thread Need help with Modbus by pashanoid

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