AH Motion Controller – Standard Instructions Manual Refer to Chapter 5: Understanding Common Devices of AH Motion Controller - Operation Manual for more information. 2.1.17 Floating-point Numbers (F, DF) The floating-point numbers are represented by decimal points in ISPSoft. For example, the floating-point number of 500 is 500.0. Refer to Chapter 5: Understanding Common Devices of AH Motion Controller - Operation Manual for more information. _2 2.1.18 Strings (“$”) What strings can process are ASCII codes (*1). A complete string begins with a start character, and ends with an ending character (NULL code).
If what you enter is a string, you can enter 31 characters at most, and the ending character 16#00 will be added automatically in ISPSoft. Refer to Chapter 5: Understanding Common Devices of AH Motion Controller - Operation Manual for more information. 2.2 EtherCAT Symbols The EtherCAT symbols are used to read states of EtherCAT slave. The symbols can be seen from the EtherCAT symbol table in the ISPSoft software. 2.3 Symbols During the process of developing a traditional program for a PLC, it generally takes much time to manage device addresses. Besides, managing or debugging the program in a big project is a burden on users.
As a result, the concept of symbols* in a high-level programming language is introduced by IEC 61131-3. A device in a PLC can be represented by a symbol, and a device can be automatically assigned to a symbol. In this way, the time to assign devices is saved, the program is more readable, and the efficiency of developing a program increases. *Note: Variables in ISPSoft are called symbols. As a result, variables are the same as symbols in terms of meaning in this 2.3.1 Application of Symbols manual. The global symbols in a project can be used in all the POUs* in the project, and the local symbols in a project can only be A symbol has to be declared before it is used.
There are two types of symbols. They are global symbols and local symbols. 2-10 Range Default EtherCAT Symbol Data type Description settings eCAT Dis.SlaveAddress[…] _ WORD[199] The EtherCAT slave address that disconnected (n=0~198) 0~9999 0 eCAT Dis.Count _ WORD The number of EtherCAT slave address that disconnected 0~（216-1） 0