This library is for control MOD-RS485-ISO module. For more information on device please check site: https://www.olimex.com/Products/Modules/Interface/MOD-RS485-ISO/open-source-hardware
Download the whole repository as an archive and load the library in Arduino IDE from Sketch → Inlcude Library → Add .ZIP library…
Then the examples would be visible in File → Examples (under the correct sub-group).
Copyright (c) 2017 Olimex Ltd. All rights reserved.
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA