1. Requirements for CPC Scripting Language
Ivan Prieto Barreiro
Jeffrey Goderie
26/11/2015

2. What is UAB? Tool used to generate code for UNICOS applications
UCPC: Generates code for the control and supervision layers
Main inputs: Device type definitions, specs. file & code templates
Device Instantiation Templates
Process Logic
Templates
Device Types
Analog
Alarm
PID
Inputs
Specifications
Outputs
Control
Application
PLC S7
Touch Panels
26/11/2015

3. Current Generation Workflow
UNICOS application sources
Code Generation
Import & Compile
Device specification list
Control Code
Inputs
Compilation Error!!!
UAB CPC Wizard
Templates
26/11/2015

4. Desired Generation Workflow
UNICOS application sources
Code Generation
Import & Compile
Device specification list
Control Code
Inputs
UAB CPC Wizard
Templates
Dynamic Errors!
Generation Errors!
26/11/2015

5. Writing Logic Templates
PLC code generated from strings
No syntactic/semantic checkings
Errors detected after generate, import & compile
No syntactic/semantic checkings during editing
Errors detected during compilation
Error messages could be improved
26/11/2015

6. Project Structure Scripting DSL Siemens DSL Schneider DSL Siemens
‘Mixing’
DSL
SchneiderScripting
‘Mixing’
DSL
26/11/2015

7. Siemens DSL (1/2) Reusable DSL for Siemens SCL language
Access to CPC devices (I/O) & CPC device instances
Syntax checking (To be optimized) & coloring
Type system (In progress)
Name binding (To be completed)
Function names
Variables
CPC device instances & fields (currently only device I/O, others?)
26/11/2015

8. Siemens DSL (2/2) Code completion (To be completed)
Function names & parameters
Variables
CPC device instances
CPC device fields
26/11/2015

9. Scripting DSL (1/3) Shared by Mixing DSLs (Siemens/Schneider)
Jython like language
Used to generate PLC code dynamically
User defined functions
Reusability of PLC code generation
Return values
Recursion
Call to standard functions
List: list.get(index), list.add(obj), max(list), min(list), all(list), any(list), obj in list
String: string.strip(), string.lower(), string.upper()
String, List: obj.size(), len(obj)
Number: abs(number), int(number), real(number)
Dictionary (TBD): dict.keySet(), put value, get value
26/11/2015

10. Scripting DSL (2/3) UAB Utilities: Control statements:
specs.findMatchingInstances(..) // Overloaded
Completion of spec fields in the conditions
TBD: Parameter validation
TBD: Completion of device type names
IDeviceInstance.getAttributeData(fieldName)
TBD: Other utilities (static methods, plug-in methods)
Control statements:
if - else / if - elif - else
for loop
while loop
break / continue (loops)
26/11/2015

11. Scripting DSL (3/3) Arithmetic expressions: + - / * % **
Comparison operators: ‘==‘ ‘is’ ‘is not’ ‘!=‘ ‘<>’ ‘>=‘ ‘<=‘ ‘<‘ ‘>’
Logical operators: ‘and’ ‘or’ ‘not(..)’
generate(..)
Generation of valid SCL (ST) statements
Partial SCL (ST) generation (only in last sentence) e.g.: generate{“IF”};
Scripting statements not allowed
Comment generation:
e.g.: ^// Comment generation with $variable$ replacement
26/11/2015

12. Siemens CPC Template DSL (1/2)
Mixing of SCL(ST) and Scripting DSL
Statements with $variable$
Variable insertion: var := $variable$;
Simple sentence evaluation: var := $3 + 2$;
Call to scripting functions: var := $myFunctions.factorial(4)$;
SCL comments are not generated!
26/11/2015

13. Siemens CPC Template DSL (2/2)
Code generation:
Real time visualization
Validation of SCL generated code
26/11/2015

14. Demo
26/11/2015

15. Questions What other device fields are required? (.index, .FEType, …)
Are overloaded functions required (scripting language)?
What Jython functions do you use often?
In what locations should scripting language be allowed?
26/11/2015

16. Next Meeting… Get requirements for the scripting language: Date?
Standard functions
Additional functionalities
Date?
26/11/2015