1, MPI is a Multi-Point Interface, suitable for PLC 200/300/400, operator Panel PC MPI/PROFIBUS and TP/OP communication card, supported MPI network communication speed for the network communication speed of 12Mbit/s. MPI network can connect up with 32 nodes, maximum communication distance is 50m, but can use repeaters to extend the length.PPI Protocol is a communications … Continue reading ppi_mpi_profibus
Author: arcozhang
Siemens PLC S7 300/400 master relays orders
Main control relay (Master Control Relay), abbreviated as MCR. MCR Master relay command is used to control whether normal execution of the instruction in the region, equivalent to a connect and disconnect the "flow" of the main switch. MCR instruction is not much used, S7-200 is no MCR instruction.MCRA to activate the master relay instructions, … Continue reading Siemens PLC S7 300/400 master relays orders
Siemens plc S7 300/400 ladder logic blocks in calling instructions
CALL in the ladder diagram coil can call functions (FC) or system functions (SFC), the call cannot be passed parameters. Calls can be unconditional, CALL directly connected to the vertical line on the left side of the coil, equivalent to UC in the statement table orders; can also be conditional, condition provided by the control … Continue reading Siemens plc S7 300/400 ladder logic blocks in calling instructions
FX2N series PLC analog I/O modules
(1) analog input module FX2N-2AD. The module is a 2-channel voltage input (DC 0~10V,DC 0~5V) or current input (DC 4~20mA), 12-bit high accuracy resolution conversion speed for the 2.5ms/channel. This module occupies 8 I/O point applies FX1N and FX2N, FX2NC series.(2) analog input module FX2N-4AD. The module has 4 input channel, 12-bit resolution. Select a … Continue reading FX2N series PLC analog I/O modules
FX2N series PLC position control module
In machine operation, speed and accuracy are often contradictory, in order to improve machine efficiency and increase speed, parking control there is a problem. So it is necessary to control. As a simple example, motor driven mechanical home by starting location, such as at top speed to return, due to the high speed stop inertia, … Continue reading FX2N series PLC position control module
FX2N Series PLC data communication module
PLC communication module is used to complete with other PLC intelligent control, other communication between devices or computers. Following brief introduction to FX serial communication function expansion board, adapter and communication modules.(1) communication expansion board FX2N-232-BD. FX2N-232-BD is to connect standard PLC and other RS-232C transport device interface board, such as personal computers, bar code … Continue reading FX2N Series PLC data communication module
Siemens S7-200 PLC programming examples – Belt conveyor control
To look many PLC Ladder Diagram is better for learn plc programming. you can learn the plc programming Thoughts and ideas. here is siemens s7200 plc rpgramming examples.(1) control requirementsMotors M1, M2, M3 three drive belt conveyor.Press the start button SB1, start the order of M1, M2, M3, the interval of 3s.Press the stop button … Continue reading Siemens S7-200 PLC programming examples – Belt conveyor control
Siemens S7-300 Ladder Diagram PLC Programming Example-Control Belt
This PLC programming example is plc control belt (1) Control requirements Electric start belt,At the beginning of the belt has two push button switches: S1 for START and S2 for STOP;At the end of the belt also has two buttons switches: the S3 for START and STOP for the S4. You can start or stop … Continue reading Siemens S7-300 Ladder Diagram PLC Programming Example-Control Belt
Siemens PLC S7-300 Ladder Diagram Programming Example-pulse generator
Siemens plc S7-300 programming the timer can also be a pulse generator. (1) Control RequirementsThe PLC program using a timer constitute a pulse generator,With two timers generate a pulse signal frequency of the duty cycle can be set Timing diagram of the pulse generator(2) Ladder DiagramPLC Ladder DiagramWhen the input I0.0 is 1, the … Continue reading Siemens PLC S7-300 Ladder Diagram Programming Example-pulse generator
SIEMENS S7-300 PLC control 3 lights Turn on Programming examples
This is siemens plc s7-300 Cycle execution Programming examples When the X0 on, the lamp Y0 on ; after 5S, the lamp Y0 off, the lamp Y1 on ; after 5S, the lamp Y1 off, the lamp Y2 on, and then after 5s , the Y2off, the lamp Y0 on, cycle….plc ladder diagram
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