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.

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_rd 
name_wr_channel mc_test2_%s_wr 
var[0].name G_ARRAY5 
var[0].index 0 
var[0].type SGN32 
var[0].scope GLOBAL 
var[0].synchronisation FALSE 
var[0].access_rights READ_WRITE 
var[0].array_size 5 
var[0].size 4 # 4 bytes per element 
var[0].create_hmi_interface TRUE # HMI-Object will be created 
# 
var[1].name L_BOOLEAN 
var[1].index 1 
var[1].type BOOLEAN 
var[1].scope CHANNEL 
var[1].synchronisation FALSE 
var[1].access_rights READ_WRITE 
var[1].array_size 1 
var[1].size 1 # 4 bytes per element 
var[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_wr 
mc_test2_L_BOOLEAN_rd