Magelis XBTGC, XBTGT, XBTGK HMI Controller - Schneider Electric

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XBT GC System Variables 1.1 System Variables: Definition and Use Overview This section defines System Variables and how to implement them in the XBT GC, XBT GT or XBT GK <strong>HMI</strong> <strong>Controller</strong>. What’s in this Section? This section contains the following topics: Topic Page Understanding System Variables 11 Using System Variables 13 10 EIO0000000626 06/2011
Understanding System Variables Introduction System Variables Naming Convention XBT GC System Variables This section describes how System Variables are implemented for the controller. These variables have the following attributes: System Variables allow you to access general system information, perform system diagnostics, and command simple actions. System Variables are structured variables conforming to IEC 61131 definitions and naming conventions. They may be accessed using the IEC symbolic name PLC_GVL. Some of the PLC_GVL variables are read-only (for example PLC_R), and some are read-write (for example PLC_W). System Variables are automatically declared as global variables. They have system-wide scope and must be handled with care because they can be accessed by any Program Organization Unit (POU) in any task. The System Variables are identified by: a structure name which represents the category of System Variable (e.g. PLC_R represents a structure name of read only variables used for controller diagnosis). a set of component names which identifies the purpose of the variable (e.g. i_wVendorID represents the controller Vendor ID). You can access the variables by typing the structure name of the variables followed by the name of the component. Here is an example of System Variable implementation: VAR myCtr_Serial : DWORD; myCtr_ID : DWORD; myCtr_FramesRx : UDINT; END_VAR myCtr_Serial := PLC_R.i_dwSerialNumber; myCtr_ID := PLC_R.i_wVendorID; myCtr_FramesRx := SERIAL_R[0].i_udiFramesReceivedOK; NOTE: The fully qualified name of the system variable in the example above is PLC_GVL.PLC_R.i_wVendorID. The PLC_GVL is implicit when declaring a variable using the Input Assistant, but it may also be entered in full. Good programming practice often dictates the use of the fully qualified variable name in declarations. EIO0000000626 06/2011 11
Page 1 and 2: EIO0000000626.03 EIO0000000626 06/2
Page 3 and 4: Table of Contents Safety Informatio
Page 5 and 6: Important Information NOTICE Safety
Page 7 and 8: At a Glance Document Scope Validity
Page 9: Overview XBT GC System Variables EI
Page 13 and 14: Using System Variables Introduction
Page 15 and 16: 1.2 PLC_R and PLC_W Structures Over
Page 17 and 18: Var Name Type Comment XBT GC System
Page 19 and 20: 1.3 SERIAL_R and SERIAL_W Structure
Page 21 and 22: SERIAL_W[0..1]: Serial Line Read /
Page 23 and 24: XBT GC System Functions EIO00000006
Page 25 and 26: I/O Expansion Bus Generic Diagnosti
Page 27 and 28: Example XBT GC System Functions The
Page 29 and 30: HMI_IsFirstMastCycle: Indicates if
Page 31 and 32: XBT GC System Functions HMI_IsFirst
Page 33 and 34: Overview XBT PLC System Library Dat
Page 35 and 36: XBT PLC System Library Data Types P
Page 37 and 38: PLC_R_STATUS: Controller Status Cod
Page 39 and 40: PLC_W_COMMAND: Control Command Code
Page 41 and 42: EIO0000000626 06/2011 Appendices EI
Page 43 and 44: Overview Function and Function Bloc
Page 45 and 46: How to Use a Function or a Function
Page 47 and 48: Using a Function Block in IL langua
Page 49 and 50: Using a Function Block in ST Langua
Page 51 and 52: 1-phase counter 2-phase counter BOO
Page 53 and 54: expansion bus E Glossary The expans
Page 55 and 56: Modbus NEMA PLC PLI POU PTO M The M
Page 57 and 58: U unlocated variable An unlocated v
Page 59 and 60: Index EIO0000000626 06/2011 Index D

Magelis XBTGC, XBTGT, XBTGK HMI Controller - Schneider Electric

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