eWON General Reference Guide - Esco Drives & Automation

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General Reference GuideIO Servers Configuration5.3.3.2 Slave AddressThis is the address of the slave device that you want to access.It is a number from 0 to 255.Example:30001,11 Polls a RTU device at address 11.5.3.3.3 IP AddressThis is the IP address of the device on an Ethernet network. It is composed of 4 numbers separated by a dot.Example:30001,11,10.0.0.50 Polls a device configured with IP address 10.0.0.50 and with Modbus slave address 11.5.3.3.4 Device specific informationWarning for new users of WAGO modules:Keep in mind that coil read and write don’t use the same address (offset of 0x200); please consult the Wago documentation.Example:If you use Wago systems with two digital inputs and two digital outputs, inputs have addresses 1 and 2, and outputs have the same. The onlyway to distinguish them it’s the read-only access or R/W access.Tags: station 11Tag Modbus address CommentMB_DigIn1 10001,11 Digital input module 1 -- read-onlyMB_DigIn2 10002,11 Digital input module 2 -- read-onlyMB_DigOut1 00001,11 Digital output module 1 for writing - Encode all leading zeroes!MB_DigOut1Read 10513,11 Digital output module 1 for reading onlyMB_DigOut2 00002,11Digital output module 2 for writingEncode all leading zeroes!MB_DigOut2Read 10514,11 Digital output module 2 for reading onlyTable 64: Wago modules - addresses examplesIn View I/O page, you can change the value of MB_DigOut1 with the update link (set to 1), and if you do that, you view that the value read isalways 0.Why?Because the eWON reads the value at the WAGO address 1 (thus, DigIn1)! If you want to read the state of the DigOut1, you must read it atWAGO address 513!The same remark is applied for analog Modbus registers. It’s the documented behavior of Wago-Modbus modules; keep it in mind.RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 93
General Reference GuideIO Servers Configuration5.4 NETMPI IO Server5.4.1 IntroductionNETMPI IO server is used to communicate with SIEMENS PLC. The eWON will connect to the PLC’s MPI interface by means of the eLINKadapter.The eLINK adapter is an interface with an MPI interface on one side and an Ethernet TCP/IP interface on the other side.The eLINK interface will be configured with an IP that the eWON will use to poll data. In addition to the IP address, the eWON will need the MPIaddress of the PLC on the MPI bus.Using that eLINK interface, it is possible to poll different types of item in the PLC. These items types are described below.5.4.2 SetupFigure 78: NETMPI configuration windowAs for the Modbus and Unite protocols, it is possible to define topics, so that a single configuration can be applied to several Tags.5.4.3 Tag name conventionIO Server configurationIO Server NameNETMPIATopic NameBItem NameCValueName,RemoteStationAddress,eLinkIpAddressValueNamePLC Address is defined Tag by TagTopic PLC Address is usedTable 65: NETMPI - IO server configurationThe Item Name can contain the PLC address where the value is polled, or not. If address is also specified at topic level, the address specified atTag level will be ignored.RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 94
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