Allen-Bradley
1747-L543
Allen-Bradley 1747-L543 SLC 500 Processor Unit PLC CPU Module Automation Control
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PLC Processors & CPUs
328 listings · 260 in stock
328 PLC processors & CPUs listings from the brands you use, each one photographed. Free shipping to all 50 US states.
Siemens
6DD1600-0AK0
Siemens 6DD1600-0AK0 Simadyn-D PM6 Processor Module Industrial Automation PLC
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$483.89
Siemens
6ES5948-3UR23
Siemens 6ES5948-3UR23 Simatic S5-155U CPU 948R Central Processing Unit Module
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$951.89
Yaskawa
GL120
Yaskawa Memocon GL120 DDSCR-120CPU34100 CPU Module 16KW Memory Ver D1B05 CPU20
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$97.89
Allen-Bradley
1785-L11B/E
Allen-Bradley 1785-L11B/E PLC-5/11 Processor Module Programmable Controller PLC
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$17.89
Allen-Bradley
1747-L541
Allen-Bradley 1747-L541 SLC 500 SLC 5/04 Processor Unit CPU Ser B Rev 3 Module
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Westinghouse
NLPS-700B
Westinghouse NLPS-700B 2619D15 G02-7 PC-700 Programmable Controller Power Supply
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Industrial part
DSP56002FC40
Freescale DSP56002FC40 24-Bit DSP 40MHz 132 PQFP Digital Processor IC
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$9.89
Omron
SP20-DT-D
Omron SP20-DT-D Sysmac Mini SP20 Programmable Controller 24VDC 10W Automation
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$65.89
Reliance Electric
45C20
Reliance Electric 45C20 AutoMate 20 Programmable Controller 802803-25RU 120/240V
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$752.89
Reliance Electric
45C1
Reliance Electric AutoMate 45C1 Programmable Controller I/O Rail 300V 10A RMS
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Reliance Electric
802802-6R
Reliance Electric AutoMate 802802-6R Programmable Controller I/O Rail Chassis
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Reliance Electric
45C1A
Reliance Electric AutoMate 45C1A Programmable Controller I/O Rail Industrial
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Reliance Electric
0-54201-2
Reliance Electric 0-54201-2 AutoMate Dual Processor Board 801418-5A PLC Module
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$71.89
Mitsubishi
A1SJHCPU
Mitsubishi A1SJHCPU CPU Unit MELSEC A Series PLC 8K Step Programmable Controller
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$36.89
Square D
8020 SCP-423
Square D 8020 SCP-423 SY/MAX Model 400 PLC Processor Module 5VDC 3.5A Industrial
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$228.89
Siemens
6ES7 341-1AH02-0AE0
Siemens 6ES7 341-1AH02-0AE0 RS232 Module Comm Processor
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$489.89
Motorola
SC02RH008CF02
Motorola SC02RH008CF02 5184625T05 Rad-Hard DSP Processor QFP-120 SMD Each
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$13.89
Allen-Bradley
60-0147-02
Allen Bradley RadiSys 60-0147-02 SV2AJ6AT i386EX SBC CPU Board 63-0061-00 Module
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$497.89
Allen-Bradley
1756-ENBT
Allen-Bradley 1756-ENBT Ser A ControlLogix EtherNet/IP Communication Bridge PLC
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Allen-Bradley
1785-KE/C
Allen-Bradley 1785-KE/C DH+ to RS232 Interface Module PLC-5 Data Highway Plus
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$14.89
Schneider Electric
TSXP576634M
Schneider TSXP576634M TSX Premium Unity Ethernet Processor 576X4 PLC Automation
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$2,572.89
Industrial part
MZ80CPU
IPS MZ80CPU Control Process Card CPU Board Lantech Stretch Wrapper Automation
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$489.89
Global
752148BK
Global Industrial 752148BK CPU UPS Power Supply Holder Under Desk Workstation
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$69.89
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Need more units than we list, a part you don't see here, or prices for a whole list? Send us the part numbers and quantities and we reply within 1 hour during business hours (Mon to Fri 9 to 4:30 CT).
Guides for PLC Processors & CPUs
- Legacy PLCsSLC 500 End of Life: Keep Running or Migrate?Where the SLC 500 stands, which spares keep one running, and how a phased move to CompactLogix keeps downtime short.
- Parts identificationHow to Read an Allen-Bradley Catalog Number & SeriesBulletin numbers, module codes, suffixes, the series letter and firmware revision, and how each one affects whether a replacement will work.
Troubleshooting guides
- TroubleshootingAllen-Bradley PLC Battery Low: Which Battery and Safe SwapThe battery for each controller family, what the BAT or BATT LED and the T10:C10 minor fault mean, how long you have, replacing it safely, and whether the program survives.
- TroubleshootingSiemens S7-1200/S7-1500 ERROR LED & Diagnostic BufferRUN/STOP, ERROR and MAINT patterns on S7-1200 and S7-1500 CPUs, the diagnostic buffer in TIA Portal, on the S7-1500 display and in the web server, and the first checks.
- TroubleshootingPLC Won't Go to RUN? Allen-Bradley Mode and Fault ChecksKeyswitch and mode-switch positions, the faults that block RUN, firmware and project mismatches, missing or wrong I/O modules, forces, and the order to check them in.
- TroubleshootingControlLogix & CompactLogix Major Fault Codes ExplainedMajor fault types and codes (T01 power-up to T07 memory), where to read them in Studio 5000, minor vs major vs I/O faults, the first checks and clearing a fault safely.
- TroubleshootingSiemens S7-300/S7-400 SF & BF LEDs and Diagnostic BufferSF vs BF (and INTF, EXTF, BUSxF on the S7-400), steady vs flashing, reading the diagnostic buffer in STEP 7, and the first checks for modules, PROFIBUS, PROFINET and backup batteries.