The magical function of function of PMC of system of FANUC numerical control

System of FANUC numerical control with its high quality, low cost, high-powered, got broad user approbate, in me the company got many use, with respect to its system itself character, endured successive long working test, fault rate is inferior. And breakdown much hair surrounds signal to detect at substandard of switch of periphery journey, spacing on circuit. In real work, understanding and familiar FANUC system handle a function richly, the judgement that surrounds breakdown external and the effect that eliminate to having get twice the result with half the effort. Here, the fast judgement that citing talks about to use the uses formidably, easily PMC function that embeds inside FANUC system to surround breakdown external and eliminate. 　 of functional 1 operation method: Press function key | SYSTEM | Switch screen → is pressed | PMC | Soft key, press corresponding soft key again, can enter respectively | PMCLAD | Indication function of echelon plan program, | PMCDGN | Indication function of the I/0 signal of PMC and in-house relay, | PMCPRM | PMC parameter and indication function. Use example: Machining center of our company vertical of a Japan uses FANUC18i system, call the police content is 2086 ABNORMAL PALLET ConTACT(M/C SIDE) , consult machine tool manual, means " tray of treatment area side is worn an unusual " , detect the PMC address of signal is X6.

The APC orgnaization of 2 this machining center is pass on of double tray large revolving stage coming back changes style, observed to many aluminous bits piles up inside treatment area, so judgement is tray bottom piled up aluminous bits, check of gas of base of down to tray cannot be passed. But call the police right now cannot eliminate, cannot make to the machine tool any operation. The echelon graph in FANUC system sets in programming language, some should show on screen call the police information, should show corresponding information the request (A coil) buy is "1" , if buy is "0" , cleared and relevant information. That is to say, want to eliminate this to call the police, must make to it corresponding information indicates a request (A) , buy is "0" . By | PMCDGN | → | STATUS | Enter signal condition to display screen, search the information that is "1" to indicate a request (A) when, check A10.

5 for "1" . Then, enter echelon plan program to display screen | PMCLAD | , search A10.

5 set are the echelon graph loop of "1" , discovery used a K9 that maintains relay in its set condition.

1 often close a point, right now condition is "0" . Consult the machine tool maintains a manual, k9.

The meaning of 1 is: Buy "1" detects for tray base invalid. Trouble removal process: Below MDI condition, with function key | OFFSET SETTING | Switch screen, by | SETTING | Key general " parameter keeps a person " set for "1" , farewell arrives | PMCPRM | Below screen, by | KEEPRL | Soft key is entered maintain model relay screen, k9.

1 set is 1" . By call the police remove pushbutton, can make at this moment A10.

5 buy are "0" , can undertake operating to the machine tool. Will large revolving stage is raised rotate 45 degrees, ravel fender, have aluminous bits accumulation as expected, tray then bottom aluminous bits clears clean. K9.

1 and " parameter keeps a person " set an original value "0" . Undertake APC is operated for many times, call the police without this again, trouble removal. 　 of functional 2 pursues in the echelon of FANUC system in programming language, f is the input signal that comes from NC side (PMC) of NC → , and G is the signal that outputs NC by PMC (PMC → NC) . Among them, g130 is the signal of lock of each axis each other that PMC outputs NC side, when among them some when the "1" that be by buy, the servo axis that allows correspondence is mobile; When be "0" , prohibit corresponding servo axis is mobile. Use example: Private plane of one homebred treatment uses FANUC21M system, when the NC program that executive origin returns, when carrying out "G91 G28 GOO ZO;" , z axis does not have a movement, CNC condition column shows for "MEM STRT MTN ***" , namely mobile instruction already gave out Z axis. With function key | MESSAGE | Switch screen, do not have call the police information. With function key | SYSTEM | Switch screen, by " diagnose " soft key, at this moment 005(INTERLOCK/START-LOCK) is "1" , namely servo axis entered each other to lock up condition. Trouble removal process: Enter echelon plan program to display functional screen, discovery and the each other with Z corresponding axis lock up signal G130.

The condition of 0 is "0" , namely signal of each other lock is reached by the input NC, check its each other to lock up a reason, discovery is one sensor is polluted by aluminous bits. After wiping, g130.

0 buy are "1" , each other lock removes, start the NC program that origin returns afresh, the motion is normal, trouble removal. The eye footprint function in PMC of 　 of 　 of functional 3 (TRACE) is a personal details that can check signal to change, record the condition that signal changes continuously, particularly a few righter of abiogenesis sex, of special breakdown search, the effect with the main move since fixed position. With function key | SYSTEM | Switch screen, by | PMC | Soft key → | PMCDGN | → {TRACE | Can enter signal to dog screen. Use example: Some is homebred what machining center uses is FANUC Oi system. Machining a process automatically, NC program now and then without reason stops, go up the clip claw with already held clip good opens an upright tray automatically (abnormal phenomenon) , CNC condition column shows MEM STOP *** , do not have any calling the police right now information, the examination diagnoses a picture, did not discover unusual, start by NC can continue to machine. Classics observation, CNC is to carrying out M06(to change a knife) when stop, main action is ATC arm rotates with main shaft (hydraulic pressure) loose / taut cutting tool. : of trouble removal process? Allow of cangue of earthen jar of Dang of manganese of A Chinese-style unlined garment unexpectedly lament of  of glow of Fan Qiang of δ Sao  is able to bear or endure letter carbon fierce?Y25.

The reason that 1) buy is "1" (estimation and machining a process automatically, now and then without reason stops breakdown about) . Via checking, of suspicion and clamp of tray of side of one treatment area detect switch of hydraulic pressure pressure (X1007.

4) is concerned. Then, use | TRACE | Signal dogs function, in machining a process automatically, surveillant X1007.

The metabolic circumstance of 4. Stop when M06 is carried out again when NC, in | TRACE | On screen, dog X1007.

The cycle of 4 a sampling when CNC without reason stops jump from original condition "1" turn for "0" , change again a "1" , affirm this pressure switch has a problem thereby. Adjust pressure of this switch movement, but breakdown as before. Change this switch then, trouble removal. Analysis of after the event, causing this breakdown cause is main shaft loosens / when clamp tool, pressure of hydraulic pressure system fluctuates somewhat (in the) inside reasonable fluctuant range, and this pressure switch made reaction as a result cause in machining a process automatically, NC program now and then breakdown of without reason inactive. CNC Milling