1: Discrete event simulation steps

Contexts in source publication

Context 1

... TCP frames (request and response) consist of a MBAP header (Modbus Ap­ plication Protocol header) plus the application layer APDU (Figure 2.13). ...

Context 2

... Arduino Ethernet Shield W5100 ( The Ethernet shield connects to an Arduino board using long wire­wrap headers which extend through the shield (Figure 3.10). This keeps the pin layout intact and allows another shield to be stacked on top. ...

Context 3

... the Modbus function we want to execute, the functions needed in our project are shown in the following screen shot taken from TIA portal information system (Figure 3.13). In the second block (Figure 3.12), we set MB_MODE = 1 inorder to perform a write to holding register function, MB_DATA _LEN = 1 because this function can write to only a single holding register.The starting address is set to 40101 since the register number selected in the server (Arduino) was 101, and since the memory zone for this function starts from 40001 then the selected register address is 40001 101 40102. ...

Context 4

... the Modbus function we want to execute, the functions needed in our project are shown in the following screen shot taken from TIA portal information system (Figure 3.13). In the second block (Figure 3.12), we set MB_MODE = 1 inorder to perform a write to holding register function, MB_DATA _LEN = 1 because this function can write to only a single holding register.The starting address is set to 40101 since the register number selected in the server (Arduino) was 101, and since the memory zone for this function starts from 40001 then the selected register address is 40001 101 40102. ...