Chapter 6 Applied Instructions b15 b0 b7 b8 D21 D20 D22 (D1, D0) 3968370 D24 D23 D25 Example 3: Suppose S is the string “1”. The first character is “ ”. Since the number of characters contained in the string is less than 6, the string is regarded as “10000”. When the PLC runs, the value in D10 is 10000. Example 4: Suppose S is the string “-00001”. The first character is “ ”. Since the number of characters contained in the string is less than 11, the string is regarded as “-0000100000”. When the PLC runs, the value in (D11, D10) is -100000. Additional remark: 1.
If the sign character in S is not 16#20, 16#30, 16#2B, or 16#2D, the operation error occurs, the instruction is executed, SM0 is ON, and the error code in SR0 is 16#2003. 2. If the ASCII code in S is not 16#20, 16#0, or within the range between 16#30 and 16#39, the instruction is not executed, SM0 is ON, and the error code in SR0 is 16#2003. 3. If the value in S exceeds the device range, the operation error occurs, the instruction is not executed, SM0 is ON, and the error code in SR0 is 16#2003. 4. If S +2 used in the 16-bit instruction exceeds the device range, SM0 is ON, and the error code in SR0 is 16#2003. 5.
If S +5 used in the 32-bit instruction exceeds the device range, SM0 is ON, and the error code in SR0 is 16#2003. 6. If the operand S used during the execution of the 16-bit instruction is declared in ISPSoft, the data type will be ARRAY [3] of WORD/INT. 7. If the operand S used during the execution of the 32-bit instruction is declared in ISPSoft, the data type will be ARRAY [6] of WORD/INT. 6-451 16#20( ) 16#20( ) (Regarded as +00 16#20( ) 16#20( ) 16#39(9) 16#33(3) 16#38(8) 16#36(6) 16#37(7) 16#33(3) 16#30(0)