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Tag: plc programming examples
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
Omron PLC high-speed counter reset method
Omron PLC high-speed counting the number of reset mode, choose Z signal + software reset and soft reset in two ways. 1. Z signal + software reset mode High-speed counter reset flag is ON state, Z-phase signal and reset input OFF → ON time by the high-speed counter current value is reset. The case of … Continue reading Omron PLC high-speed counter reset method
How do wire OMRON proximity switch and the PLc?
DC two-wire type: Brown line PLC input point com PLC received positive power supply, power negative to the blue line.NPN type: Brown plugged blue Power, black line received a PLC input points, com is connected to a power supply of the PLC. Type NPN is leaking, when an object is detected low level signal output.PNP … Continue reading How do wire OMRON proximity switch and the PLc?
Omron PLC programming software to use the function block
Omron PLC programming software also increases the function block function block preparation software features to IEC61131-3A function block call a ladder exampleThe main purpose is to promote good function block structured programming, function calls; allow complex programs to create less code, more manageable process.A block from the block header and block body compositionPhysique - to … Continue reading Omron PLC programming software to use the function block
Frequency measurement for Omron PLC high-speed counter
By PRV instruction, you can read the frequency of the input pulse, high-speed counter frequency measurement, frequency is measured in Hz, hexadecimal 8-bit output, and can be used only in high-speed counter 0. In addition, also during high-speed counter 0 comparison operation at the same time, measurement frequency. Even in the frequency measurement, nor will … Continue reading Frequency measurement for Omron PLC high-speed counter
Omron PLC equipment disassembly sequence and method
(1) downtime must be two or more people care operations; (2) The front panel of the CPU mode selector switch from "Run" to "stop" position; (3) off the main power supply of the PLC, and then close the other to die Sakamoto power supply; (4) The power supply shelf connected to the power line wire number and remember … Continue reading Omron PLC equipment disassembly sequence and method
Initialization module (OB100) – Siemens S7-300PLC organization block OB
When the CPU state into the stop state operating mode, the operating system calls OB100. After the end of OB100 operation, operating system calls OB1. Use OB100 characteristics prior to execution of OB1, you can prepare the initial variables or parameters for the user to run the main program.
Hardware interrupt (OB40) – Siemens S7-300PLC organization block OB
Response process from different modules (eg I / O modules, CP or FM module module) issued a warning or a hardware interrupt request signal.OB 40 runs, the operating system does not receive the other hardware interrupt requests.You can modify the parameters for analog or digital module with a programming tool which is set by the … Continue reading Hardware interrupt (OB40) – Siemens S7-300PLC organization block OB
Cyclic interrupt (OB 35) – Siemens S7-300PLC organization block OB
Set or modify the interval (default is 100ms) from the programming tool. Ranging from lms ~ lmin. When allowed to interrupt the cycle, OB35 cycle run at regular intervals. When OB1 OB35 run to set time, OB 35 is executed again. When using OB 35 properties, should ensure that the value of the interval is set longer than … Continue reading Cyclic interrupt (OB 35) – Siemens S7-300PLC organization block OB
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