1. Programming software
Siemens offers a wide range of programming software for SIMATIC series PLCs, mainly STEP MICRO/DOS and STEP MICRO/WIN; STEP mini; standard software package STEP7
The programming language of the S7 series PLC is very rich, including LAD, STL, SCL, GRAPH, HIGRAPH, CFC, etc. Users can choose a language programming and mix them in several languages if needed.
2. Program structure
The program structure is mainly applicable to S7-3000 and S7-400. It has three programming methods: linear programming, step-by-step programming and structured programming.
The FPI series programmable controller is a small PLC product of Matsushita Electric Works of Japan.
FPI programming software and command system
1. Programming mode
NPST-GR provides three programming methods: ladder mode; statement table mode and statement expression.
2. Comment function
The NPST-GR can add annotations to I/O relays and output points, giving the user a clear view of the equipment and relays used for the relay.
3. Program check
NPST-GR can find errors in the program syntax and perform program verification
The NPST-GR monitors user-programmed programs and can run tests. Users can check relays, registers and PLC operating status for easy commissioning and modification.
5. System register settings
NPST-GR can set the contents of the N0.0-N0.418 system register, and select or input according to the prompt information on the screen, which is simple and convenient.
6. I/O and remote I/O address allocation
Use NPST-GR to assign I/O and remote I/O addresses to each slot on the host expansion board
7. Data management
Data management can save programs or data for data backup or stage data before being passed to PLC
In the application of programming, there is a single busbar for Siemens, and a double busbar for Matsushita of Japan;
In addition, the input and output of Siemens and Japan’s Matsushita are different. The input of Japan’s Matsushita is only X, and the output is only Y.
In fact, the language is the same, that is, the method is different, and the two can be converted to each other.