eWON General Reference Guide - Esco Drives & Automation

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General Reference GuideIO Servers Configuration5.4.3.1 ValueNameDBxBy Data block x Byte offset y (0-255)DBxWy Data block x Word offset y (0 - 65535)DBxFyData block x Float offset y (+-3.4e38)DBxDy Data block x DWord offset y (-2147483648->2147483647) (*)MxBMxWMxFMemento x as byteMemento x as wordMemento x as real(*) Important: See “Tags are stored as Float” on page 67• Bit access modifier:MxD Memento x as double (*)Tx Timer x (0-65535)Cx Counter x (0-65535)Table 66: value names for NETMPI addressesIn any of the above items, it is possible to access a single bit (except for float items).#x must be appended to the Value Name. (Bit index goes from 0..31)The syntax can be used for reading bits and for writing them as well.Example:DB1W13#3 represents bit 3 of W13 in DB 1REM:Bit index range depends on a referenced item (for W, bit index maximum value is 15)• Status register:The STATUS Tag is a special Tag that returns information about the current state of the communication for a given device. As for other Tags, thestatus Tag ValueName is composed of:Status, Global Device Address• You can define a status Tag for each PLC used.• If you use the status address, the Tag must be configured as analog.0Communication not initialized. Status UNKNOWN.If no Tag is polled on that device address, the communication status is unknown.1 Communication OK.2 Communication NOT OK.Table 67: Tag Status meaning5.4.3.2 Device AddressThe device address is either appended to the ValueName in the Item Name definition, or entered in the Topic global address fields.The device address is composed of: RemoteStationAddress,eLinkIpAddress:• RemoteStationAddress: is the PLC’s MPI address• eLinkIpAddress: is the eLINK IP address.Important:If the PLC address is defined at the Topic level, it can be omitted in the Tag definition. In that case the Tag name will only containthe "ValueName".If the PLC address is specified at the Topic level, it will replace any address defined Tag by Tag.RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 95
General Reference GuideIO Servers Configuration5.5 UNITE IO Server5.5.1 IntroductionThe eWON RS485 link can be configured as an UNITELWAY SLAVE INTERFACE. When the BaudRate in the UNITE IO Server is set to a valuedifferent than "Disabled", the Unitelway slave module in the eWON will be enabled.This Unitelway slave provides 2 features:• Poll items in a Unitelway capable device.The device can be the Unitelway master itself or a device addressable through the Unitelway master on the XWay network.• Forward XIP requests from TCP/IP XIP to Unitelway bus and thus, act as a gateway between XIP and Unitelway.Using that feature, it is possible to access a PLC connected to the eWON’s Unitelway link by connecting PL7PRO using the XIP driver startedwith the eWON IP address as destination.5.5.2 Setup5.5.2.1 Communication SetupFigure 79: XWAY-UNITELWAY configurationIf more than one Serial port are available, you must choose on which COM the Unitelway request will be sent.Baud RateParityStop Bit(s)Master Response TimeoutRx message timeout (MSEC)Tx message timeout (MSEC)Force UnitelWay V2ADOXway Network StationSelect the baud rate applying to your industrial networkThe parity to apply: none / odd / even. This field is set by default to Odd, as in the main cases in atypical UniTE topology. However, the eWON allows you to define a different parity type (Even orNone), in case this is needful to comply with your industrial network installations.Number of stop bitsMaximum time the eWON will wait for a valid message from the Unitelway master. This value can becritical for a correct operation, depending on the responsiveness of the master. A value of 1000should be selected to guarantee a correct operation.Maximum time between a request is posted and the response is receivedMaximum time for a request to be sentIf checked, the eWON will initiate a communication in V2 with the devices. When used with a TSXPLC, this check box can be left unchecked.Link address base. The eWON will respond to AD0 and AD0+1 on the Unitelway link.The eWON will act as an Unitelway slave, it will respond to 2 consecutive link addresses AD0 andAD0+1, doing this improves the throughput of data across the eWON when acting as a gateway.Address of the eWON on the XWAY network.When acting as an XIP to Unitelway gateway, the eWON will only respond the XWay network stationdefined here. Any XIP frame addressed to another network station will be ignored.Table 68: XWAY communication setup controlsRG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 96
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eWON General Reference Guide - Esco Drives & Automation

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