Conversion design method of relay diagram is converted with the original function within the same PLC ladder diagrams. This equivalent conversion is a simple shortcut of programming method, conversion method of advantages many, one, original following electrical control system after long-term using and test, has was proved can completed system requirements of control function; second, … Continue reading PLC ladder diagram Conversion design method
Tag: plc basics
PLC Mitsubishi FX2N series general-purpose timers
100ms timer set value set value from 0.01s~327.67s;1ms for 0.1s~3276.7s;10ms timer set timer value from 0.001s~32.767s.When X0 is switched on, the address number for the T200 the current value of the counter counts the number of 10ms clock pulse when the set value when K123, the normally open contact of the timer switched on, disconnect … Continue reading PLC Mitsubishi FX2N series general-purpose timers
Mitsubishi FX2N series PLC totalizer type timer
When the timer winding T250-driven input X0 is switched on, the T250 is the current number of clock pulses the counter starts accumulating 100ms, K123 when the set values are equal, the normally open contact of the timer switched on, disconnect the normally closed contact. When the count intermediate driver input X0 disconnect or power … Continue reading Mitsubishi FX2N series PLC totalizer type timer
Mitsubishi FX2N series PLC high-speed counter
High speed counter are 32-bit adding/subtracting counters. It is suitable for high-speed PLC records the input of an external input signal. But only 6 PLC input terminal X0~X5, if one of these 6-input has been occupied by a high speed counter, it cannot be used in other high-speed counter (or other uses). In other words, … Continue reading Mitsubishi FX2N series PLC high-speed counter
FX2N series PLC Delay extension of timer
FX2N series PLC timer delay has a maximum value, such as the maximum time delay 100ms 3276.7s.If maximum value of project delay greater than the selected timer, you can use a number of timers relay delay, which is to start a timer to time delay at the appointed time, the first timer the normally open … Continue reading FX2N series PLC Delay extension of timer
MITSUBISHI FX2N series PLC two counter relay count
FX2N series PLC of the maximum 16-bit counter counts numbers is 32767. If engineering in the by need of meter number times number is greater than counter of maximum value, is can used 32 bit counter, also can used multiple counter relay count, that first with count pulse started a counter count, meter number times … Continue reading MITSUBISHI FX2N series PLC two counter relay count
SIEMENS S7-300 PLC CPU module component
S7-300 there are many different types of CPU, suitable for different levels of control. CPU module is integrated with the digital I/O, and integrated digital I/O and analog I/O.CPU component is packaged in a sturdy and compact plastic enclosure, Panel on the status and error indicator LED, mode selection switch and communication interfaces. Micro memory … Continue reading SIEMENS S7-300 PLC CPU module component
SIEMENS S7-300 PLC CPU memory
PLC the PLC operating system with basic intelligence, able to complete PLC Designer provides a variety of work. User programs designed by the user, it allows the PLC can complete features specific to user requirements. User program memory capacity in bytes (Byte, b for short) as the unit.1. PLC used physical memory(1) random access memory … Continue reading SIEMENS S7-300 PLC CPU memory
S7-400 backup power supply
S7-400 one or two spare batteries that are installed in the power supply module, stored in the built-in loading memory and external loading memory, working memory for user programs in the RAM and internal clock backup power to keep variables in memory.By CPU on the Panel "EXT.-BATT." (External battery) jacks provide DC 5~15V voltages, you … Continue reading S7-400 backup power supply
Classification of CPU S7-400 modules
S7-400 there are 7 kinds of S7-400H, CPU has two kinds of CPU. 412-1 CPU and 412-2 CPU are used for medium sized and small scale projects, the integrated MPI/DP interface allows the configuration for the DP interface, 412-2 CPU has two DP interface.414-2 CPU and 414-3 CPU with moderate performance, applicable to the scale … Continue reading Classification of CPU S7-400 modules
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