Siemens Sentron PAC4200

Siemens Sentron PAC4200

FBD 功能圖如下：

STL語句表如下：

A     I 0.0

CU    C 10          計數器加計數

A     I 0.1

CD    C 10          計數器減計數

A     I 0.2

S     C 10           計數初值預置

               L     C#55           裝入計數初值到ACCU1

               A     I 0.3

               R     C 10           計數器C10復位

               A     C 10

           =     Q 4.0

l        當輸入信號I 0.2由“0”變為“1”時，計數初值55被裝入計數器C10；

l        如果輸入信號I 0.0由“0”變為“1”，計數器C10的計數值加1（除非C10的計數值已達到999）；

l        如果輸入信號I 0.1由“0”變為“1”，計數器C10的計數值減1；（除非C10的計數值已減到0）；

l        如果輸入信號I 0.3由“0”變為“1”，計數器C10被復位，計數值為0；

l       只要計數器C10的計數值不為0，則Q 4.0輸出就為“1”。

ALLEN BRADLEY 1791-N4V2 I/O BLOCK 120VAC 6 POINT ANALOG MODULE  
ALLEN BRADLEY 1791-NDC I/O BLOCK 120VAC 6 POINT ANALOG MODULE  
ALLEN BRADLEY 1791-NDV I/O BLOCK 120VAC 6 POINT ANALOG MODULE  
ALLEN BRADLEY 1791-TB2 TERMINAL, 30 POSITION, 10 PCS KIT 
ALLEN BRADLEY 1791D-OB16P 24VDC I/O BLOCK 16 OUT SOURCE REMOVABLE TAB  
ALLEN BRADLEY 1791D-OB16PX BLOCK I/O EXPANSION 24VDC 16 OUT SOURCE RTB  
ALLEN BRADLEY 1791D-OV16P 24VDC I/O BLOCK EXPANSION 16 IN SINK RTB  
ALLEN BRADLEY 1791D-OV16PX BLOCK I/O EXPANSION 24VDC 16 OUT SOURCE RTB  
ALLEN BRADLEY 1791D-16BO BLOCK I/O 24VDC 16 IN SINK REMOVABLE TB  
ALLEN BRADLEY 1791D-16BOX 24VDC I/O BLOCK EXPANSION 16 IN SINK RTB  
ALLEN BRADLEY 1791D-16VO BLOCK I/O EXPANSION 24VDC 16 OUT SOURCE RTB  
ALLEN BRADLEY 1791D-16VOX BLOCK I/O EXPANSION 24VDC 16 OUT SOURCE RTB  
ALLEN BRADLEY 1791D-8B8P 24VDC I/O BLOCK 8 IN SINK 8 OUT SOURCE RTB