plc program
Buck three-phase motor starting. When wound asynchronous motor starting, stator voltage starting is often used, while the rotor circuit access rheostat,KM4R1Input signal 3, SB1, SB2, FR;
PLC communication module is used to complete with other PLC and other communications between intelligent control device or computer. Following simple FX series communication function expansion board, adapter and communication modules.(1) communication standard connection expansion board FX2N-232-BD FX2N-232-BD is RS-232C transmission PLC interface with other equipment. Such as PC, barcode readers or printers. Can be … Continue reading Special features of Mitsubishi FX series PLC modules-data communication module
Passwords can limit set PLC programming tool, display module, interface to read and write procedures, monitoring, change the current values, and so on, to protect programs or restrict the operator's procedures for monitoring purposes.Mitsubishi FX series PLC password set way: will PLC power, and through programming cable and computer connection, in programming software GX-DEVELOPER in … Continue reading Mitsubishi PLC password settings
X3 to reset the counters C0 C0 X4 input pulse count, enter the number of pulses up to 6, counter C0 normally open contact closure, Y0. X3 action, C0 reset, Y0 loss
Precautions for use: (1) the MPS order multiple circuit or circuits of electric shock can be stored up to back multiple branches out. (2) the 1th MPS stack instruction before the branch, multiple branches using MRD stack before the branch instruction in the middle and last branch of multiple circuits using MPP out of the warehouse instruction. (3) … Continue reading Mitsubishi FX series PLC multiple output directives (MPS and the MRD, and MPP)
1. take rising edge/falling edge of LDP/LDF------directiveFeatures: take a single normally open the rising edge/falling edge and bus (bus bar and branch bus left) connected when a rising edge when specifying operating units through to 1 scan cycle. 2. ANDP/ANDF-----with rising edge/falling edge commandFeatures: series a single normally open the rising edge/falling edge.3. the ORP/ORF--------or rising … Continue reading Mitsubishi FX series PLC instructions
INV (Inverse) instruction in the ladder diagram with a 45 ° short slashes to represent, it will perform the calculation result be negated before the instruction, and the result is 0 it becomes 1, and the result was 1 becomes 0. In the following diagram, if X0 and X1 both ON, Y0 is OFF; otherwise, … Continue reading Reverse, Non processing and END PLC instructions
NOP instruction for no operation, mainly used for short circuit, change the circuit functions and procedures to use when debugging.Added to the program after no operation, no effect on the results of logical operations, but when the program is changed in the future, replaced by other directives no operation, can reduce the program changes.If no … Continue reading PLC instructions NOP
PLC ONE 