DVP-ES3 Series Programming Manual 2.1 Introduction to Devices This section describes the values and strings processed by the PLC. It also describes the functions of devices, including input, output and auxiliary relays, as well as timers, counters, and data registers. The PLC simulates external devices in the PLC’s internal memory, so the word “device” is a generic name that refers to all the internal memory locations in the PLC. A device can be a bit device or a word device. Bit devices simulate coils, contacts and flags, while word devices simulate registers. _2 2.1.1 Device Table *1:
Constants are indicated by K in the device lists in Chapter 5 and Chapter 6 in the DVP-ES3 Series Programming ISPSoft. Manual. For example, when “K50” appears in the DVP-ES3 Series Programming Manual, enter only the number 50 in *2:
Floating-point numbers are indicated by F/DF in the device lists in Chapter 5 and Chapter 6 in the DVP-ES3 Series 2-2 Type Device name Number of devices Range Bit device Input relay X 256 X0–X377 Output relay Y 256 Y0–Y377 Data register D 48,0000 D0.0–D29999.15 W 48,0000 W0.0–W29999.15 *4 Auxiliary relay M 8192 M0–M8191 Special auxiliary relay SM 2048 SM0–SM4095 Flag S 2048 S0–S2047 Timer T 512 T0–T511 Counter C 512 C0–C511 32-bit counter HC 256 HC0–HC255 Word device Input relay X 64 X0–X63 Output relay Y 64 Y0–Y63 Data register D 30000 D0–D29999 W 30000 W0–W29999 *4 Special auxiliary relay SR 2048 SR0–SR2047 File register FR 65536 FR0–FR65535 Timer T 512 T0–T511 Counter C 512 C0–C511 32-bit counter HC 256（512 words） HC0–HC255 Index register E 10 E0–E9 5 E10–E14 *4 Constant*1 Decimal system K 16 bits:
-32768 to 32767 32 bits: -2147483648 to 2147483647 Constant*2 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 to ±3.40282347+ 38 String*3 String “$” 1–31 characters