MRES switch how the operation will clear the data and procedures PLC400.Best answer1 memory card inserted in the bottom of the CPU. CPU requires the machine to reset (LED STOP lamp slowly flashing).2 switch the switch to MRES and keep it there (about 9 seconds) until the LED STOP light continues to shine.3 in the … Continue reading MRES switch problem

This is based on the WINCC PCS7 landing, the installation of the CEMAT version number is 7.1SP1, the selection of the 007 library. Before the project is a good, normal use. For some reason, today I will reinstall the computer system, in accordance with the step, CEMAT also re installed, but when the project is … Continue reading WINCC no landing window

The S7-400PLC program under what conditions will be lost, if the PLC power supply and power supply immediately, will not have lost PLC program.Best answer1, if the PLC power supply, power supply immediately, will cause the PLC program is lost?If there is no backup battery or flash memory card (prior backup), will cause the loss … Continue reading S7-400PLC program lost

Can not use the program or other settings to prohibit the use of ST0P outside the S7-400PLC or MRES switches.Best answerCan not. This can only be considered from the system or external equipment, such as:1, the development of relevant operating system2, to the PLC cabinet lock

Through the 400PLC control of a WINCC status display, but in WICC do not see the connection variables of him and PLC, is indeed WICC internal variables seen in WICC, this is what he shows the status of the PLC through what way, is not through C script or VB script to achieve, how should … Continue reading WINCC status display problem

The master station set up a PID control valve is P=5 I =5 D=0 control is stable, can be output to the maximum and minimum values, but also I have a program through my 200 and Mudbus communications, from the station of PID is the same as the PID parameter value is written from the … Continue reading SIEMENS PID parameter settings why the same procedure as the PID parameters, but the output value of the change is not the same

S7-CP PtP Param V5.1 SIMATIC how to install, how I can not hold upBest answer1, I would like to ask how to properly install PtP Param V5.1 Sp8 CP:http://www.ad.siemens.com.cn/service/answer/solution.aspx? Q_ID=68387&cid=1029?2, see the answers to similar questions:http://www.automation.siemens.com.cn/Service/answer/solution.aspx? Q_ID=97625&cid=1027?

Relay type output can use PWM function?Best answer1, Smart specification, as shown in figure 1.2, pulse width modulation (PWM) output cycle. If the time is millisecond range allowed is 2 to 65535; if the time is microseconds, range allowed is 10 to 65535.PWM belong to the pulse output, can not be used to see your … Continue reading SMART SR60 S7-200 how to use the PWM function

Q0_0_MoveAbsolute is not like Q0_0_Movevelocity in the direction of the input, then it is how to determine the direction of motionBest answerThis is the absolute position of the directive, directly through the next set of positive and negative to determine the positive and negative

I installed V5.5+sp2 STEP7 after the start, said not to install license SIMATIC automation, installed when I installed the V5.1+sp1+upd3, but I do not see my software Best answerThe authorization manager will when installing the STEP7 software installed at the same time, in the beginning of your program -- --STEP7 find the authorization manager manually … Continue reading How to install SIMATIC automation license