2 Functions of Devices in DVP-PLC X0 The output of Y0 will be determined by circuit , i.e. On/Off of X10 will Y0 1 determine the output status of Y0. Y0 is repeated X10 Y0 2 The Handling Process of PLC Program (Batch I/O) Regenerate input signal X input Regenerate input signal 1. Before the execution of the program, PLC reads the Input terminal Read into memory On/Off status of the external input signals into the input signal memory at a time. Input signal memory 2. The On/Off status of the input signal during the Program processing Read X0 status from memory execution of the program will not change the signal X0 Write in Y0 status status in the input signal memory.
The new On/Off Y0 Device status will be read in the next scan. Y0 Read Y0 status from memory Memory 3. There will be approximately a 10ms delay from the M0 On→Off or Off→On changes to the status being Write in M0 status recognized by the contact in the program. The delay Regenerate output Output time may be affected by the scan time in the Output latched memory Program processing program. Output terminal After the PLC reads the On/Off status of every input signal in the input signal memory, it will start to execute Y output every instruction in the program in order starting from address 0. The execution result (On/Off of every output coil) will be stored in order into the device memory.
Regenerate output 1. When the program executes to END instruction, it will send the On/Off status of Y in the device memory to the output latched memory. The output latched memory is the coil of the output relay. 2. There will be a 10ms delay from On Off or Off On of the relay coil to the On/Off status of the contact. 3. There will be a 10 ~ 20us delay from On Off or Off On of the transistor module to the On/Off status of the contact. DVP-PLC Application Manual 2-13