SIEB & MEYER CNC 8x.00 SMDDE Communication between CNC and external applications

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Chapter Overview Communication Commands (commands) 3 Command Objects (command items) 4 Data Objects (data items) 5 Index: SMDDE Objects 9

Chapter Overview

Introduction The CNC allows execution of certain actions by an external application. Instructions can for example be transferred to the CNC or values can be inquired by different data objects. NOTICE Damage to the machine / wrong production results The uncontrolled remote control of the machine can cause damage to the machine! Always ensure clear states of the CNC and the machine when commands are transmitted. This manual describes communication commands, command objects and data objects that allow data exchange with the CNC. ▶ These functionalities allow for example inquiring events or transmitting...

Data Transmission The connection to the CNC software can be realized via different transmission protocols. The CNC supports the common transmission protocols. DDE (Dynamic Data Exchange) The DDE-protocol is locally available in the operating systems Windows (from version ► Commands and data can be exchanged via DDE, if both application programs are running. ► The application that requires data (client) sends a request to the application that provides data (server = CNC). ► The data provided this way are permanently linked with the server. This ensures that the client application has access to...

Data Transmission OverviewThe following table lists the available transmission commands and objects: Terms and Definitions

Data Transmission Communication is realized via ASCII format, only. ► The communication process always includes a request package and a response package. ► To acknowledge the receipt of a request package the response package may be identical with the request package. ► If the value of a data object is requested, the response package already includes the data value. ► If, however, the CNC receives an unknown data object, the response package includes the unknown data object and an empty data value ('"'). A corresponding check of the response package can avoid the waiting time, until the timeout...

For further support, please contact the SIEB & MEYER service (e-mail: cnc- In this example the client requests the name of the current production program. Request package of the client ► The package is generated by the client (in this case: 124). ► The REQUEST command requests the value of the data package ACTPRO-GRAM. The command ID is generated by the client (in this case: 020327). This ID is returned back by the CNC in the response package allowing exact assignment to the request later. ► The data object ACTPROGRAM requests the name of the current production program. <REQUEST Value="020327">...

► The response package serves as acknowledgement of receipt. The structure corresponds to the structure of the request package. ► The package ID is generated by the CNC (in this case: 332553). ► The REQUEST command includes the ID generated by the client (in this case: 020327). This ensures correct assignment to the request. ► The Value attribute of the data object ACTPROGRAM includes the state of the automatic advice note (in this case: ADVISEOFF). The value of the data object includes the requested file name. <REQUEST Value="020327"> <ACTPROGRAM Value="ADVISEOFF"> C:\SM_WPROG\DRILL.SM5 </ACTPROGRAM>...

Data Transmission All transmission processes are triggered only by the CNC. ► The server is always the camera system. ► In case of an error the transmission of a package is repeated up to 4 times. If the transmission is still not correct, the process is canceled. ► In a CNC 8x.00 the used interface is reserved only during one transmission. ► In case of an error the transmission of a package is repeated up to 4 times. If the transmission is still not correct, the process is canceled. ► In CNC 4x.00 two waiting times (timeouts) are distinguished: The figure shows the page for transmitting ► After...

► Machine parameter PORT = port number. A separate port must be selected for every camera system! If, for example, two cameras are installed in one machine, they are identified via the port number when communicating with the camera system. Data are transmitted via a serial interface. Specific notes: ► The connection is configured by the machine manufacturer in the parameter editor ► If several camera systems are connected (e.g. machine with several independent work areas), a separate connection must be configured for every system. ► Default setting: 9600 baud, 8 data bits, 1 stop bit, no parity...

Data Transmission

Communication Commands (commands) A communication command (command) transmits a communication object to the CNC (command object or data object). To allow communication with the CNC ensure that the receipt of external statements (CNC command NONDDE). A communication object defines the function and the content of a data package.The table lists all available communication objects (in alphabetical order). The column “Object” specifies the type of the data object. ► For details on the command objects refer to chapter 4 "Command Objects (command items)", page 25. ► For details on the data objects refer...

<REQUEST Value="020327"> <ACTPROGRAM Value="ADVISEOFF"> C:\SM_WPROG\DRILL.SM5 </ACTPROGRAM> Command Description Version ADVISE data item The CNC sends the value of a CNC object. 10.08 Argument Description data item Data object Example (TCP/IP) <CNCSTATUS Value="ADVISEON"> <CNCSTATUS Value="ADVISEON">