Chapter 2 Devices *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 “$” in chapters 5 and 6, whereas they are represented by “ ” in ISPSoft, for example, for “ 1234 ” , simply input 1234. 2.1.1.2 AH500 Advanced CPU Modules (AHCPU511/521/531) 2-3 Type Device name Number of devices Range Double-precision floating-point number DF 64 bits:
±2.2250738585072014-308~ ±1.7976931348623157+308 String* String “$” 1~31 characters Type Device name Number of devices Range Bit device Input relay X 4096 (AHCPU511) X0.0~X255.15 8192 (AHCPU521) X0.0~X511.15 16384 (AHCPU531) X0.0~X1023.15 Output relay Y 4096 (AHCPU511) Y0.0~Y255.15 8192 (AHCPU521) Y0.0~Y511.15 16384 (AHCPU531) Y0.0~Y1023.15 Data register D 786432 (AHCPU511) D0.0~D49151.15 1572864 (AHCPU521) D0.0~D98303.15 2097152 (AHCPU531) D0.0~D131071.15 Link register L 786432 (AHCPU511) L0.0~L49151.15 1572864 (AHCPU521) L0.0~L98303.15 2097152 (AHCPU531) L0.0~L131071.15 Auxiliary relay M 8192 M0~M8191 Special auxiliary relay SM 2048 (AHCPU511/521/531-EN) SM0~SM2047 4096 (AHCPU511-RS2) SM0~SM4095 Stepping relay S 2048 S0~S2047 Timer T 2048 T0~T2047 Counter C 2048 C0~C2047 32-bit counter HC 64 HC0~HC63 Word device Input relay X 256 (AHCPU511) X0~X255 512 (AHCPU521) X0~X511 1024 (AHCPU531) X0~X1023 Output relay Y 256 (AHCPU511) Y0~Y255 512 (AHCPU521) Y0~Y511 1024 (AHCPU531) Y0~Y1023 Data register D 49152 (AHCPU511) D0~D49151 98304 (AHCPU521) D0~D98303 131072 (AHCPU531) D0~D131071 Special data register SR 2048 (AHCPU511/521/531-EN) SR0~SR2047 4096 (AHCPU511-RS2) SM0~SM4095 Link register L 49152 (AHCPU511) L0~L49151 98304 (AHCPU521) L0~L98303 131072 (AHCPU531) L0~L131071 Timer T 2048 T0~T2047 Counter C 2048 C0~C2047 32-bit counter HC 64 (128 words) HC0~HC63 Index register E 32 E0~E31 Constant* Decimal system K 16 bits:
-32768~32767 32 bits: -2147483648~2147483647