Graphical user interface

The graphical user interface has access to NC-interfaces and NC-data via so-called HMI-objects. The access protocol is encapsulated via a DLL which offers a Windows application write/read access to HMI-objects. Interface objects are created automatically in accordance with the configuration list for the graphical user interface, if the parameter create_hmi_interface is set.

In this case two objects are created for each specified variable, one for write access and one for read access. This occurs independently of the access rights of the NC-channel, i.e. even if the NC-channel has only read access to the variable (e.g. access_rights = READ_ONLY), the graphical user interface can also write to the variable. A GUI object is created for each array element in the case of an array.

If required, the format of the names of the GUI objects can be matched as required by specifying corresponding templates in the list (as of Version V254). In this case, %s must be specified as a wildcard for the name and, in the case of an array, also %d after it for the index.

Designator	Significance	Default value
name_rd_global_array	Read in the case of global array	cnc_ve_ %s_rd[%d
name_wr_global_array	Write in the case of global array	cnc_ve_ %s_wr[%d
name_rd_channel_array	Read in the case of channel-specific array	mc_ve_ %s_rd[%d
name_wr_channel_array	Write in the case of channel-specific array	mc_ve_ %s_wr[%d
name_rd_global	Read in the case of global variables	cnc_ve_ %s_rd
name_rd_global	Write in the case of global variables	cnc_ve_ %s_wr
name_rd_channel	Read in the case of channel-specific variables	mc_ve_ %s_rd
name_wr_channel	Write in the case of channel-specific variables	mc_ve_ %s_wr

Example: Assignment of the name for GUI interface

# ***************************************##       External variables V253##
****************************************#name_rd_global_array    
cnc_test1_%s_rd[%d]name_wr_global_array    
cnc_test1_%s_wr[%d]name_rd_channel         
mc_test2_%s_rdname_wr_channel         
mc_test2_%s_wrvar[0].name            
G_ARRAY5var[0].index           
0var[0].type            
SGN32var[0].scope           
GLOBALvar[0].synchronisation     
FALSEvar[0].access_rights       
READ_WRITEvar[0].array_size          
5var[0].size            
4      # 4 bytes per elementvar[0].create_hmi_interface    
TRUE       # HMI-Object will be created#var[1].name            
L_BOOLEANvar[1].index           
1var[1].type            
BOOLEANvar[1].scope           
CHANNELvar[1].synchronisation     
FALSEvar[1].access_rights       
READ_WRITEvar[1].array_size          
1var[1].size            
1      # 4 bytes per elementvar[1].create_hmi_interface    
TRUE       # HMI-Object will be created

The following HMI objects are created implicitly on the basis of the above extract from the configuration list:

cnc_test1_G_ARRAY5_rd[0]cnc_test1_G_ARRAY5_wr[0]cnc_test1_G_ARRAY5_rd[1]cnc_test1_G_ARRAY5_wr[1]cnc_test1_G_ARRAY5_rd[2]cnc_test1_G_ARRAY5_wr[2]cnc_test1_G_ARRAY5_rd[3]cnc_test1_G_ARRAY5_wr[3]cnc_test1_G_ARRAY5_rd[4]cnc_test1_G_ARRAY5_wr[4]mc_test2_L_BOOLEAN_wrmc_test2_L_BOOLEAN_rd