Product Introduction

6SE7041-1TK84-1BH0 Siemens will launch a SITOP PSU8600 single-phase 480W main power supply module to expand the product line of this series. The new product integrates 4 outputs, each with a current of 5A, and the voltage of each output can be adjusted manually when the power supply is running, or remotely adjusted through software and controllers, with an adjustment range of 4V to 28V, so no additional power supply is required to support 5V or 12V voltage devices. By using the CNX8600 expansion module, it can be expanded to *36 outputs, and all outputs can be remotely monitored. PSU8600 can be fully integrated into the TIA Portal engineering platform, thus contributing to the rapid implementation of automation engineering. Parameter setting and remote diagnosis can be performed directly on a computer through the Sitop Manager software. With two integrated Ethernet/Profinet ports and OPC UA, users can obtain comprehensive diagnostic and maintenance information and analyze it directly in the automation system, so as to quickly locate faults and reduce downtime. . .87: How to ensure that the master station does not shut down when the slave station loses power, fails to communicate, or the slave station communication port is damaged? You need to insert the corresponding organization block in your STEP7 project. On the central rack of S7-300F, you can mix error-proof and non-error-proof (standard) digital E/A modules. For this purpose, as in ET200M, an isolation module (MLFB: 6ES7195-7KF00-0XA0) is required to isolate the error-proof module and the standard module in the central and expansion racks. 43: How to plan the analog module SM374 in the STEP7 hardware configuration? How to find this module in the hardware catalog? 1. Program structure 39: What is the address occupied by the SM323 digital card?

Currently, there are many types of PLCs, but their basic structure and principles are the same, and their basic functions, instruction systems and programming methods are similar. Therefore, this teaching plan starts from practical application and selects the Siemens S7 300 series high-performance, small and medium-sized modular programmable controllers with the most characteristics and IEC standards as the background model.

S7-300/400 is a modular PLC, mainly composed of a rack, CPU module, signal module, function module, interface module, communication processor, power module and programming device.

1. S7 series: PLC products in the traditional sense, S7-200 is a small PLC for low performance requirements. S7-300 is a modular small and medium-sized PLC, which can be expanded to 32 modules at most. S7-400 is a large PLC that can be expanded to more than 300 modules. S7-300/400 can form MPI, PROFIBUS and Industrial Ethernet, etc.

2. M7-300/400: Using the same structure as S7-300/400, it can be used as a CPU or a function module. It has the functions of an AT-compatible computer and can be programmed in languages such as C, C++ or CFC.

3. C7 consists of S7-300 PLC, HMI (human-machine interface) operator panel, I/O, communication and process monitoring system.

4. WinAC is based on Windows and standard interfaces (ActiveX, OPC) to provide software PLC or slot PLC

How does STEP 7 store POINTER parameter types in format?

STEP 7 saves POINTER parameters in 6 bytes. Table 4-1 shows the memory area used to save POINTER parameter types and the data saved in each byte. The POINTER parameter type saves the following information: DB number (0 if no data is saved in the DB). Memory area in the CPU (the table lists the hexadecimal codes for the various memory areas).

If you declare a formal parameter as a POINTER parameter type, only the memory area and the address are required. STEP 7 automatically converts the format of the input item to the pointer format.

What do the return values of the function blocks DP_SEND and DP_RECV mean and how do you understand them?

The "DP_SEND" function block includes three parameters: "DONE", "ERROR" and "STATUS", which are used to indicate the status and success of data transmission. The "DP_RECV" function block includes four parameters: "NDR", "ERROR", "STATUS" and "DPSTATUS", which are used to indicate the status and success of data transmission. You can define the corresponding data address area to store these return values and analyze the meaning of the returned values. When Error = False, STATUS = 0, DONE = True, and NDR = True, it means that the data exchange between the CPU and CP342-5 is *conducted.

6SE7041-1TK84-1BH0 3. Perform a self-test on the peripherals. This way, the entire plant can be put into operation much faster and changes to the system will not affect production operations. When the power is turned off without a backup battery and a memory card, the hardware configuration information (except the MPI address) and the program are deleted. However, the residual magnetic memory is not affected. If the program is reloaded in this case, it will work with the old values of the residual magnetic memory. For example, these values usually come from the first 8 counters. If this is not taken into account, it will lead to dangerous system states. For example, power failure within the time defined in the startup window. Note that in "RUN" mode, only the programming device can be connected to the MPI subnet.

Notes on multi-CPU environment in Siemens S7-400 plc

Operating on sub-rack UR1 or UR2 with shared K bus and unsegmented P bus

? All CPU operating states (CPU operating system performance) operating on a common peripheral bus (P) and communication (K) bus will be automatically synchronized.

? A complex large task can be split into up to 4 CPUs for calculation.

? Proportional performance upgrade is possible by simply inserting CPUs.

? Increase system resources (memory, standard area, counters...). But the number of input/output points will not increase.

? Time-critical and non-time-critical process areas can be separated (ie: fast control of a fast closed-loop controller).

? Multiple CPUs can share a CP template and external communication. I/O templates can only have one CPU. If one stops, the other CPUs will also stop.

? The following S7-CPUs support multi-CPU operation mode:

6ES7412-1XF01-0AB0

6ES7413-1XG01-0AB0

6ES7413-2XG01-0AB0

6ES7414-1XG01-0AB0

6ES7414-2XG01-0AB0

6ES7414-2XJ00-0AB0 Version 3 and above

6ES7416-1XJ01-0AB0

6ES7416-2XK00-0AB0 Version 3 and above

6ES7416-2XL00-0AB0 Version 3 and above

? M7-CPU 486-3 Pentium 75 MHz (formerly: CPU 488-4) and 488-3 Pentium 120 MHz (formerly: CPU 488-5) Currently, multi-CPU operation is not supported.

Operation on segmented subrack CR2

? The segmented subrack contains two independent P-buses, with 10 slots in segment 1 and 8 slots in segment 2.

? One CPU is used per peripheral bus segment, and the I/O modules are assigned to the local CPU. The CPUs operate independently of each other, without synchronization of operating states.

? The common communication bus allows communication between the subunits without the need for additional hardware.

? Thus, 2 separate controllers can be configured in one CR. This saves space in the cabinet.

? Cost savings, since only one subrack and one power supply unit are required.

? Both S7-400 and M7-400 CPUs can be used without any restrictions, i.e., even S7 and M7 CPUs can be placed together in CR2. (Warning: To run M7-CPU 486-3 and 488-3 together in CR2, only M7-SYS V2.0 and STEP7 basic software V3.1 can be used. The original CPU 488-4 and 488-5 cannot be run in CR2).

6SE7041-1TK84-1BH0 can, but the requirements for the configured axes in terms of power and precision are very different. In the case of high requirements, the servo drive SIMODRIVE611U, MASTERDRIVESMC or SINAMICSS must be run with CPU317T. In the case of low requirements, the MICROMASTER series can also meet the power and precision requirements. 3. In FC166, x is a real number and y is an integer. You can also start the block via an external trigger. All parameterization data of the FM (DB/traverse program, machine data, incremental dimension table, etc.) are stored in this SDB. ①. Addressing of switch quantity template: Module installation steps Insert the bus connector into the CPU and the signal module, function module, communication module, and interface module. Each module (except the CPU) has a bus connector. When inserting the bus connector, you must start from the CPU and remove the bus connector of the next module. Insert the bus connector into the previous module. * The next module cannot be installed with a line connector. Hang all modules on the rail in the specified order of the modules. Slide the module to the left side of the module. Then install the module downwards.

Use a 0.8 to 1.1mm instrument screwdriver to tighten the screws and fix all modules

Label the modules

After the modules are installed, give each module a slot number. Insert the slot number label on the corresponding module as shown in Figure 2-9. The slot number label is included in the CPU.

Why is the system always in STOP state after powering on, even if the CP342-5 switch has been turned to Run? You should check whether the STEP7 program and configuration are correct (delete the program and only download the hardware configuration), check whether the 24V power line connected to the CP342-5 is normal, whether the M terminal is short-circuited with the M terminal of the CPU, whether the communication cable is connected correctly (confirm that the communication cable is not internally short-circuited), and whether the CP firmware is correct. If you confirm that the above reasons can be eliminated, then your CP342-5 may be damaged, please replace it.

How to configure a PROFIBUS slave station with CP342-5?

1. Create a new project in STEP7 and insert an S7-300 station.

2. Select an S7300 rail and the corresponding CPU in the hardware configuration window.

3. In the Hardware Configuration window, select the CP342-5 corresponding to your order number and version number in the path "SIMATIC 300 > CP 300 > PROFIBUS > CP342-

5" and insert it into the corresponding slot of the S7300 station. Note that if you purchased Version5.1 and can only find Version5.0 in the configuration, you can use Version5.1 instead of Version5.0.

4. When inserting the CP342-5, a PROFIBUS properties window will pop up. Click the "New..." button to create a PROFIBUS network PROFIBUS(1) and set the station address of the CP342-5 as a slave to 3.

5. Double-click the CP342-5 to open the CP342-5 properties window. Select the "DP Slave" option under the "Operating Mode" tab. A warning window will pop up to inform you that if you want to use CP342-5 realizes the communication between CPU and PROFIBUS slave station. It must call FC1 (DP_SEND) and FC2 (DP_RECV) function blocks to realize the data exchange between CPU and CP342-5, while the data exchange between CP342-5 and PROFIBUS is completed automatically without programming. FC3 and FC4 are used for diagnosis and communication function control and are generally not called

6SE7041-1TK84-1BH0 interrupt driver module: OB40, used to respond to and process hardware interrupts. In the application module, some modules provide hardware interrupt functions, such as the pulse counter module FM350-1. ... END_STRUCT; Compile STL source code. (1) PLC is in STOP state and the red light is on. In this way, the commissioning of the entire factory is much faster, and changing the system will not affect production operation. 1.1.3 TIA's openness. TIA is a highly integrated and unified system, and it is also a highly open system. The openness of TIA is reflected in the following aspects. 6ES7322-5GH00-0AB0SIMATICS7-300, digital output SM322, opto-isolation, 16DA (solid-state relay), AC/DC24-48V; 0.5A; 1.5A surge current, 6ES7322-5HF00-0AB0SIMATICS7-300, digital output SM322, opto-isolation, 8DO (relay output), 40-pin, 24VDC, 120-230VAC, 5A, with integrated SNUBBER, for indicating load 6ES7322-5RD00-0AB0SIMATICS7, digital output LSM322, optional isolation, 4DO, 15V/20MA, 20-pin, for sending hazardous area signals, with diagnostic capabilities, PTB test

STEP 7 stores POINTER parameter types in format? 

STEP 7 saves POINTER parameters in 6 bytes. Table 4-1 shows the memory areas used to store POINTER parameter types and the data stored in each byte. The POINTER parameter type stores the following information: DB number (0 if no data is stored in the DB). Memory area in the CPU (the table lists the hexadecimal codes for the different memory areas).

Address of the data (in Byte.Bit format). 

If you declare a formal parameter as a POINTER parameter type, only the memory area and address are required. STEP 7 automatically converts the format of the input item to the pointer format.

What do the return values of the function blocks DP_SEND and DP_RECV mean and how do you understand them?

The "DP_SEND" function block includes three parameters: "DONE", "ERROR" and "STATUS", which are used to indicate the status and success of data transmission. The "DP_RECV" function block includes four parameters: "NDR", "ERROR", "STATUS" and "DPSTATUS", which are used to indicate the status and success of data transmission. You can define the corresponding data address area to store these return values and analyze the meaning of the returned values. When Error = False, STATUS = 0, DONE = True, and NDR = True, it means that the data exchange between the CPU and CP342-5 is *conducted.

6SE7041-1TK84-1BH0 3. Perform a self-test on the peripherals. This way, the entire plant can be put into operation much faster and changes to the system will not affect production operations. When the power is turned off without a backup battery and a memory card, the hardware configuration information (except the MPI address) and the program are deleted. However, the residual magnetic memory is not affected. If the program is reloaded in this case, it will work with the old values of the residual magnetic memory. For example, these values usually come from the first 8 counters. If this is not taken into account, it will lead to dangerous system states. For example, power failure within the time defined in the startup window. Note that in "RUN" mode, only the programming device can be connected to the MPI subne

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