Beckhoff CX2100-0004, Руководство пользователя, Страница: 35 / 53

Configuration
CX2100-0004 35 Version: 1.2
6.3 Example Program
The following PLC program shows by way of an example how the three function blocks are used for the
power supply unit.
PROGRAM MAIN
VAR
nCounter AT %Q*: USINT;
(* navi switch *)
bUp AT %I* : BOOL;
bDown AT %I* : BOOL;
bLeft AT %I* : BOOL;
bRight AT %I* : BOOL;
bEnter AT %I* : BOOL;
bToggle AT %I* : BOOL;
nIn : USINT;
eNaviSwitchCx2 : E_CX2100_NaviSwitch;
(* get display *)
fbGetDisplayText : FB_CXGetTextDisplayUSB;
bExecuteRead : BOOL;
eModeRead : E_CX2100_DisplayModesRd;
nCursorMode : USINT;
nBacklight : USINT;
bReadCursorInfoReq : BOOL := TRUE;
bReadBacklightReq : BOOL := TRUE;
bReadLine1Req : BOOL;
bReadLine2Req : BOOL;
bReadLinesReq : BOOL := TRUE;
(* set display *)
fbSetDisplayText : FB_CXSetTextDisplayUSB;
bExecuteWrite : BOOL;
eModeWrite : E_CX2100_DisplayModesWr;
bCursorOnReq : BOOL;
bCursorOffReq : BOOL;
bBlinkCursorOnReq : BOOL;
bBlinkCursorOffReq : BOOL;
bBacklightOnReq : BOOL;
bBacklightOffReq : BOOL;
bClearDisplayReq : BOOL;
bWriteLine1Req : BOOL;
bWriteLine2Req : BOOL;
bWriteLinesReq : BOOL;
bSetCursorPosXReq : BOOL;
bSetCursorPosYReq : BOOL;
bSetCursorPosXYReq : BOOL;
(* common *)
nCursorPosX : USINT;
nCursorPosY : USINT;
sLine1 : STRING;
sLine2 : STRING;
bBusy : BOOL;
bError : BOOL;
nErrorID : UDINT;
END_VAR
nCounter := nC 1;
nIn.2 := bUp;
nIn.3 := bDown;
nIn.4 := bLeft;
nIn.5 := bRight;
nIn.6 := bEnter;
(* get navi switch *)
eNaviSwitchCx2 := F_CXNaviSwitchUSB(nIn);
(* prepare get display mode *)
IF (eModeRead = eCX2100_DisplayNoActionRd) AND (eModeWrite = eCX2100_DisplayNoActionWr) THEN
IF bReadCursorInfoReq THEN
eModeRead := eCX2100_ReadCursorInfo;
bExecuteRead := TRUE;
ELSIF bReadBacklightReq THEN
eModeRead := eCX2100_ReadBackLight;
bExecuteRead := TRUE;