Document No.EX##-TDQ0005 September 11, 2012 Product Development Div.5, SMC Corporation Dear users of the serial transmission unit, EX600-SEC#, Please be informed of the handling precautions for the setup file, ESI(XML). Two types of ESI file are useded it properly as follows. 1.SMC EX600-SECx_V11.xml Please select here when you use OMRON Sysmac Studio. ESI schema version 1.5 2.SMC EX600-SECx_V12.xml Please select here when you use Beckhoff Automation TwinCAT System Maneger. ESI schema version 1.2