AH 5 00 Pr ogr am m ing Ma n ua l2 - 4Type Device name Number of devices RangeIndex register E 32 E0~E31Constant*Decimal system K 16 bits: -32768~3276732 bits: -2147483648~2147483647Hexadecimal system 16# 16 bits: 16#0~16#FFFF32 bits: 16#0~16#FFFFFFFFSingle-precisionfloating-point number F 32 bits: ±1.17549435 -38 ~±3.40282347+ 38Double-precisionfloating-point number DF 64 bits: ±2.2250738585072014 -308 ~±1.7976931348623157 + 308String* String “$” 1~31 characters*1: The decimal forms are notated by K in the device lists in chapters 5 and 6, whereas they areentered directly in ISPSoft, for example, for K50, simply input 50.*2: The floating-point numbers are notated by F/DF in the device lists in chapters 5 and, whereasthey are represented by decimal points in ISPSoft, for example, for F500, simply input 500.0.*3: The strings are notated by “$” in chapters 5 and 6, whereas they are represented by “ ” inISPSoft, for example, for “1234”, simply input 1234.2.1.2 Basic Structure of I/O StoragesDevice Function Access ofbitsAccess ofwordsModificationby ISPSoftForcing the bitON/OFFX Input relay OK OK OK OKY Output relay OK OK OK OKM Auxiliary relay OK - OK -SM Special auxiliaryrelay OK - OK -S stepping relay OK - OK -T Timer OK OK OK -C Counter OK OK OK -HC 32-bit counter OK OK OK -D Data register OK OK OK -SR Special dataregister - OK OK -L Link register OK OK OK -E Index register - OK OK -2.1.3 Relation between the PLC Action and the Device TypeDevice typePLC actionNon-latchedareaLatchedarea Output relayPower: OFF→ON Cleared Retained ClearedSTOP↓RUNThe output relay is cleared. Retained Retained ClearedThe state of the outputrelay is retained. Retained Retained RetainedThe state of the outputrelay returns to that beforethe PLC’s stopping.Retained RetainedThe state of the outputrelay returns to that beforethe PLC’s stopping.The non-latched area iscleared. Cleared Retained ClearedThe state of the latchedarea is retained. Retained Retained Retained
