User manual OMRON GRT1 27-11-2006

[. . . ] W04E-EN-03 SmartSlice GRT1-Series GRT1-PRT PROFIBUS Communication Unit OPERATION MANUAL SmartSlice GRT1-Series GRT1-PRT PROFIBUS Communication Unit Operation Manual Revised November 27, 2006 ii Notice: OMRON products are manufactured for use by a trained operator and only for the purposes described in this manual. The following conventions are used to classify and explain the precautions in this manual. Always heed the information provided with them. !DANGER !WARNING Indicates information that, if not heeded, is likely to result in serious injury or loss of life. Indicates information that, if not heeded, could possibly result in serious injury or loss of life. [. . . ] it requests new parameters, or fails to respond) will not activate the Auto-CLEAR mode. The Master Unit will however, service the slave device. This feature can be used in case failure during operation, does not necessitate to switch the entire network to Auto-CLEAR mode. Control Process Auto-CLEAR Description When Auto-CLEAR has been enabled in the PROFIBUS Master Unit, a failure of the GRT1-PRT will cause an Auto-CLEAR event. When Auto-CLEAR has been enabled in the PROFIBUS Master Unit, a failure of the GRT1-PRT will not cause an Auto-CLEAR event. The Master will however service the GRT1-PRT Unit (e. g. send new parameters). FINS Fragment Length Setting Extensions Box Auto-Clear Processing Ignore Auto-CLEAR Configuration Data Convention The Configuration Data Convention setting defines how the GRT1-PRT will handle the special identifier format data parts of the Check I/O configuration message. The GRT1-PRT can perform the check either according to the original PROFIBUS DP standard, or according to the PROFIBUS DP-V1 standard. This allows the GRT1-PRT to use either standard PROFIBUS DP data types or extended PROFIBUS DP-V1 data types. Control DPV1 Compliant Description The Check I/O configuration message will contain PROFIBUS DP-V1 Data type definitions in the special identifier format data parts and the GRT1-PRT will perform the check on this assumption. The Check I/O configuration message will contain standard PROFIBUS DP Data type definitions as well as vendor specific data types and the GRT1-PRT will perform the check on this assumption. EN50170 Compliant Error on Cyclic Data Exchange The Error on Cyclic Data Exchange settings box, defines the behaviour of the PROFIBUS Master Units on the PROFIBUS network with respect to the GRT1-PRT, in case it fails to respond during I/O data exchange. Depending on the setting, the Master Unit will either continue sending I/O data exchange messages to the slave device, or abort I/O data exchange, and continue with requesting the GRT1-PRT Unit's diagnostics data. When continuing sending I/ O data exchange data, the Unit's diagnostics data will not be updated. 44 Setup the GRT1-PRT Configuration Section 3-3 Control Continue if slave not responding Description The PROFIBUS Master Unit will continue to send I/O data exchange messages, when the GRT1-PRT device fails to respond. The diagnostics data of the GRT1-PRT will not be updated. The PROFIBUS Master Unit will abort the data exchange with the GRT1-PRT Unit, and continue to send diagnostics request messages to the GRT1-PRT, until it responds. The diagnostics data of the GRT1-PRT will be updated accordingly. Abort if slave not responding Note A failure of the GRT1-PRT during I/O data exchange will always be reported to the CS1/CJ1 PLC CPU. If Auto-CLEAR has been enabled, the failure to respond will result in the PROFIBUS Master Unit switching to CLEAR mode. Diagnostics Update Delay The Diagnostics Update Delay defines the number of PROFIBUS DP cycles during which the PROFIBUS Master Unit will ignore diagnostics message returned from the GRT1-PRT containing the Prm_Req flag. During the Diagnostics Update Delay period the PROFIBUS Master Unit will continue requesting its diagnostics data. The I/O Module Tab, shown below, defines the I/O Configuration for the GRT1-PRT. This I/O Configuration is downloaded to the PROFIBUS Master Unit and sent to the physical device by the Master Unit for verification at the start of communication. I/O Module Tab Selecting the I/O Configuration 1, 2, 3. . . The I/O Configuration can be selected using the following procedure. Select the first row and double-click it using the left mouse button. A dropdown list will appear (see figure below). From the drop-down list select the type of slice which is in this first slot, right next to the GRT1-PRT. [. . . ] Example: Sending a "Unit Maintenance Present Value Read" command to the PROFIBUS Communication Unit. Example: PROFIBUS Master Unit's station address: 05 Unit number: 0 Unit address: 11 Hex GRT1-PRT Communication Unit's station address: 65 Ladder program PROFIBUS DP-V1 Master Unit CMND C S D Explicit message sent PROFIBUS Network Read SmartSlice alarm data SmartSlice I/O System Operation Reads the Alarm data of the connected SmartSlice I/O Unit from the PROFIBUS Communication Unit. The data is read using the EXPLICIT MESSAGE SEND command (2801). The command data is written in words starting from D01000 in the PLC and the response data is stored in words starting from D02000. If the command does not end normally, the end code is stored in D00006 and the send command is re-executed. [. . . ]