Working with the demo to get to know CoDeSys.....used to Simatic SCL
- Can the AT declaration only refer to absolute addresses? The S7 AT can refer to almost any type of memory, also FB and FC internal memory....nice feature by S7...can avoid pointers
- Is it possible to declare structures as "private" to FBs, or must structures always be declared as DUTs?

PS, seems to be a few bugs in the system?
VAR_INPUT CONSTANT functionality in CFC seems not to work.....
System crashes if a composer, selector, box is inserted in a CFC chart and immediately deleted...
Setting execution order in paged CFC when no page is selected, erases all pages, seems to be no way to get them back....

yes same here you can AT %MB0

Jeah, supected that.
Would be nice if some overlaying without pointers emerged in some future version, seems like the norm in V3 addresses the issue.
Likewise, private structures is a must, why not do it he Siemens way then something like this would be possible.....

sAlarms : STRUCT //Alarm Structure
b08 : BOOL ; //[b08]
b09 : BOOL ; //[b09]
b10 : BOOL ; //[b10]
b11 : BOOL ; //[b11]
b12 : BOOL ; //[b12]
b13 : BOOL ; //[b13]
b14 : BOOL ; //[b14]
b15 : BOOL ; //[b15]
bActionFault : BOOL ; //[b00] Action Fault Alarm
bTransitFault : BOOL ; //[b01] Transit High/Low Fault
bFeedbackFault : BOOL ; //[b02] Feedback Fault
bExternalFault : BOOL ; //[b03] External Fault - never latched
bPowerFault : BOOL ; //[b04] Power Fault - never latched
bTransparent : BOOL ; //[b05] Transparent alarm (i.e not XE) - never latched
bFeedbackWarning : BOOL ; //[b06] Feedback Warning
bXA01 : BOOL ; //[b07] Auxiliary Alarm 01
END_STRUCT ;
swAlarms AT sAlarms : WORD;