AH500 Programming Manual *1: The decimal forms are notated by K in the device lists in chapters 5 and 6, whereas they are entered directly in ISPSoft, for example, for K50, simply input 50. *2: The floating-point numbers are notated by F/DF in the device lists in chapters 5 and, whereas they are represented by decimal points in ISPSoft, for example, for F500, simply input 500.0. *3: The strings are notated by “$” in chapters 5 and 6, whereas they are represented by “ ” in ISPSoft, for example, for “ 1234 ” , simply input 1234.
2.1.2 Basic Structure of I/O Storages 2.1.3 Relation between the PLC Action and the Device Type 2-4 Type Device name Number of devices Range Hexadecimal system 16# 16 bits: 16#0~16#FFFF 32 bits: 16#0~16#FFFFFFFF Single-precision floating-point number F 32 bits: ±1.17549435-38~±3.40282347+38 Double-precision floating-point number DF 64 bits:
±2.2250738585072014-308~ ±1.7976931348623157+308 String* String “$” 1~31 characters Device Function Access o f Access of Modification Forcing the bit ON/OFF bits words by ISPSoft X Input relay OK OK OK OK Y Output relay OK OK OK OK M Auxiliary relay OK - OK NO SM Special auxiliary relay OK - OK NO S stepping relay OK - OK NO T Timer OK OK OK NO C Counter OK OK OK NO HC 32-bit counter OK OK OK NO D Data register OK OK OK NO SR Special data register - OK OK NO L Link register OK OK OK NO E Index register - OK OK NO Device type Non-latched Latched Output relay PLC action area area Power: OFF→ON Cleared Retained Cleared STOP ↓ RUN The output relay is cleared.
Retained Retained Cleared The state of the output relay is retained. Retained Retained Retained The state of the output relay returns to that before the PLC’s stopping. Retained Retained The state of the output relay returns to that before the PLC’s stopping. The non-latched area is cleared. Cleared Retained Cleared The state of the latched area is retained. Retained Retained Retained RUN→STOP Retained Retained Retained SM204 is ON. Cleared Retained Cleared (All non-latched areas are cleared.)