Rexroth VT-VSPA2-50-10/T5

咨詢(xún)熱線(xiàn)--17750626260

PLC內(nèi)的存儲(chǔ)器主要用于存放系統(tǒng)程序、用戶(hù)程序和數(shù)據(jù)等。
1)系統(tǒng)程序存儲(chǔ)器
PLC系統(tǒng)程序決定了PLC的基本功能，該部分程序由PLC制造廠家編寫(xiě)并固化在系統(tǒng)程序存儲(chǔ)器中，主要有系統(tǒng)管理程序、用戶(hù)指令解釋程序和功能程序與系統(tǒng)程序調(diào)用等部分。
系統(tǒng)管理程序主要控制PLC的運(yùn)行，使PLC按正確的次序工作;用戶(hù)指令解釋程序?qū)LC的用戶(hù)指令轉(zhuǎn)換為機(jī)器語(yǔ)言指令，傳輸?shù)紺PU內(nèi)執(zhí)行;功能程序與系統(tǒng)程序調(diào)用則負(fù)責(zé)調(diào)用不同的功能子程序及其管理程序。
系統(tǒng)程序?qū)儆谛栝L(zhǎng)期保存的重要數(shù)據(jù)，所以其存儲(chǔ)器采用ROM或EPROM。ROM是只讀存儲(chǔ)器，該存儲(chǔ)器只能讀出內(nèi)容，不能寫(xiě)入內(nèi)容，ROM具有非易失性，即電源斷開(kāi)后仍能保存已存儲(chǔ)的內(nèi)容。
EPEROM為可電擦除只讀存儲(chǔ)器，須用紫外線(xiàn)照射芯片上的透鏡窗口才能擦除已寫(xiě)入內(nèi)容，可電擦除可編程只讀存儲(chǔ)器還有E2PROM、FLASH等。

ASD 7/8 ODF SUCTION FILTER-DRIER 45S7-VV NIB
 
STANLEY 3/8'' PNEUMATIC NUT RUNNER, MISSING TAG
 
STANLEY 3/8" DRIVE RIGHT ANGLE ELECTRONIC NUTRUNNER E30LSRA1AXG-17 *OPTION #1*
 
TITAN TWIST DRILL SIZE-N4 CS10004
 
JARVIS HIGH SPEED TAP M10 x 1.5 D11 1LG S/B JARFLO NIB
 
40FT. 2-1/2"X3"X3-1/2?" CHAIN NIB
 
WIDELL 3-5/16-12 HSS 8-FLUTE TAP GH-5
 
BAY-STATE 1/2 L 4 THREAD HS TAP

1/4'' HEX DRIVE PNEUMATIC NUTRUNNER, MISSING TAG
 
BLACK PANTHER DETROIT MICH, 2 FLUTE HIGH SPEED DRILL BIT 53/64
 
ANDERSON C14 1/2-3/8" SS TWIST KNOT WIRE WHEEL BRUSH NIB 13553 TS3S
 
GLEASON CUTTING TOOLS CORP. 6-1/2" LONG GEAR HOB START CUTTER 34AC-1404 *NEW*
 
GARLAND MANUFACTURING 51934 RAWHIDE MALLET, 1" X 3", LOT OF 2, NNB
 
CITCO DIAMOND DRESSING TOOL CA50R-S DTO4024 LOT OF 2
 
BAHCO 6961 1/4" 100MM EXTENSION BAR, NEW SEALED
 
MILWAUKEE 1/2" DRIVER/DRILL 12V WITH 120V CHARGER 0501-20
 
TOLEDO 1-1/2" PIPE THREADER DROP HEAD N O .12
 
NATIONAL 2 IN BOX OIL SEALS 50136 S NIB
 
OSG DRILL BIT M 8X 1D5
 
GTD 1 1/4-16 NS HS G H4
 
FLEXSTAKE MOUNTED DELINEATOR 49-1/4"
 
GREENFIELD GTD M6 x 1 HS G D5 K2105 P LOT OF 4 NIB
 
SUPER / MORSE 1-5/16" SHANK DRILL BIT 5779 / 597 / 56418 *NEW*
 
MSA RESPIRATOR MASK SIZE-MEDIUM 7-204-1
 
MARTIN 4 GROOVE SHEAVE PULLEY NIB 4 3V 315 SH 104954
 
BREEZE AERO-SEAL 1-1/2"-2" HOUSE CLAMPS 316 24 H NIB
 
STARRETT 9"-12" OUTSIDE MICROMETER CALIPER SET-C NO. 224
 
SANDVIK COROMANT 1025 CARBIDE INSERT NIB N151.2-300-5E 105205
 
APEX 1/2" SQUARE FEMALE DRIVE, 18MM FEMALE HEX, LONG SOCKET UG-MB-18MM35 *NEW*
 
M 5/16-18 NC HS TAP 4 THREADS GH3
 
S AND D 1/2" HSS TAPER SHANK NIB 091433 / 0281-J114
 
BATA POLYBLEND SIZE-7 STEEL SHANK BOOTS CSAZ195 / ANSIZ41PT91 / MI/75C/75
 
1" ROUND COLLET 5C
 
LSI 1/2 - 20 NF HS GH5 2993 CT44407 3 FLUTE
 
2-FLUTE 19/32 HS TWIST DRILL SHANK
 
HELI-COIL G H4 HSS V PLUG TAP 1-8STI NC / 8187-16
 
RIDGID 1"-3" HEAVY DUTY PIPE CUTTER N26-S
 
ALLEN BRADLEY 3/4'' CONDUIT HUB 1490-N9 NIB
 
DEVILBISS 1/4"NPT CONNECTOR JGB-403 *NEW LOT OF 19*
 
OPW 3/4"NPT SINGLE USE BREAKAWAY COUPLING NIB 66V-0250
 
SPORLAN CATCH-ALL 1/4" SAE FLARE FILTER-DRIER NIB C-082 103858
 
WELDON 3/4 K69-HS DOUBLE SIDED END MILL BB 24-5
 

THREADWELL 1" TAP SQ 4
 
AMERICAN PUNCH 7/16" X 3/4" PRESS PUNCH NIB 3T10
 
HELICOIL 7/16-14 INSERTING HAND TOOL 7551-7 *NEW*
 
WELDON 3/4 2 FLUTE B24-5 END MILL B68-HS
 
FALK GRIDMEMBER SLEELFLEX COUPLING SIZE-5 763021 NIB

KELLEMS 2-2-1/2" PULLING CABLE 38-04-1094
 
PRECISION TWIST 8.80 M/M, 7"OAL, DRILL BIT #157 *NEW*
 
SURE-GRIP BUSHING SKX1-3/8 RL7 NIB
 
UZ ENGINEERED PRODUCTS 1/4" 2-FLUTE KWIK CUT DRILL BIT NIB 90271
 
GARDNER DENVER DGD 380/60 12/90 MOTOR TOOL NUTRUNNER EDR5085A13M3C / 946246A8
 
3/8" 2-FLUTE TWIST DRILL TAPER SHANK
 
APPLETON COVER PLATE 1 1/4-1 1/2 "
 
union BUTTERFIELD 3/16X3/8 DE 2-FLUTE ENDMILL M646150 / 5110366 NIB
 
AMERICA 7/8-14 GH4 4 FLUTE