Delta DVP-ES3 — 6.19.2 Explanation of Communication Instructions

DVP-ES3 Series Programming Manual  Mode for receiving data: 2, 3, 5, 6, or 9. Starting the execution of the instructi on Sending d ata Reception fl ag Receiving d ata Completion fl ag Comm uni cation timeout fl ag 2 3 2 2 1 4 4 1 Description: ①  Start/stop the execution of the instruction. ②  Time during which data is sent. The period of time in which data is sent is not measured. ③  After the first character is received, the time that passes before the next character is received is measured. Whenever a character is received, the instruction clears the time measured. _6 The communication timeout flag is not set to ON until the time measured exceeds the timeout period.

④  If the instruction is still enabled after you reset a completion flag or a communication flag, the next communication data is sent automatically when the instruction is scanned in the next cycle. 10. Mode for sending data / Mode for receiving data 8-bit mode: The command that is edited is stored in the initial transmission device, and the command to be sent includes the head code and the tail code. The instruction divides the 16-bit data into the high 8-bit data and the low 8-bit data. The instruction ignores the high 8-bit data, and can send or receive the low 8-bit data can be sent or received. Take standard Modbus for example. Sending the data: (PLC→external equipment) 6-552