Allen-Bradley
20-COMM-C
Allen-Bradley 20-COMM-C ControlNet Communication Adapter Card Ser B 5VDC 275mA
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Communication & Network Modules
293 listings · 239 in stock
293 communication & network modules listings from the brands you use, each one photographed. Free shipping to all 50 US states.
Weekly new-arrivals email for Communication & Network Modules
Allen-Bradley
1756-ENBT
Allen-Bradley 1756-ENBT ControlLogix EtherNet/IP Module 10/100 700mA 5.1VDC 60C
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$38.89
ABB
INNPM12
ABB INNPM12 Network Process Module Symphony +5V 10W Cl.I Div.2 6643386M6 Rev A
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$108.89
ABB
INNPM12
ABB INNPM12 Symphony Infi 90 Network Process Module +5V 10W Cls I Div2 T4 Rev B
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$108.89
Bailey
INNPM12
Bailey INNPM12 Infi 90 Symphony Network Process Module 5VDC 10W Rev A 6643385A1
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$62.89
Allen-Bradley
1203-GD1
Allen-Bradley 1203-GD1 Ser A Remote I/O Module 120/240V AC 12VDC 60mA 50/60Hz
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$34.89
ABB
INNIS11
ABB INNIS11 Symphony Network Interface Module 5 VDC 1.1A Cl I Div 2 6644063B1 T4
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$36.89
Allen-Bradley
1485T-P2T5-T5
Allen-Bradley 1485T-P2T5-T5 Ser. C DeviceNet PowerTap 24VDC 2 Port Panel Mount
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$48.89
Foxboro
RH914YZ
Foxboro FCM2F2 RH914YZ Fieldbus Communications Module 2Mbps Fiber 2km 24VDC 5.5W
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$440.89
Industrial part
820-0040-1R
820-0040-1R Rev D Communication Module USB RS-232 DataMan 8000 Barcode Reader
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$442.89
ABB
INNPM12
ABB INNPM12 Network Process Module Symphony 5VDC 10W 512KB ROM/RAM FM Cl I Div 2
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$43.89
Industrial part
FDN-DN1
InterlinkBT FDN-DN1 6603596 DeviceNet Spanner Module 128 Bytes 11-30 VDC IP67
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$382.89
Modicon
AS-P890-000
Modicon AS-P890-000 984 Remote I/O Processor Module 120/220V 50/60Hz.5/.25A
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$87.89
Allen-Bradley
1784-KTX
Allen-Bradley 1784-KTX Ser B ISA Communication Card DH+ DH-485 Remote I/O 16-bit
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$26.89
Bailey
IMCPM02
Bailey IMCPM02 Infi 90 Communication Port Module ASSY 6639665F1 Rev B 1900284A01
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$292.89
ABB
IMCPM02
ABB IMCPM02 Infi 90 Communication Port Module +5 VDC 4.1 VA FM Cl I Div 2 T4
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$103.89
Allen-Bradley
1756-CNBR
Allen-Bradley 1756-CNBR Ser. E ControlLogix ControlNet Bridge Module 2 BNC RJ45
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$20.89
Allen-Bradley
1756-CNBR/D
Allen-Bradley 1756-CNBR/D ControlLogix ControlNet Bridge Module 5.1VDC 1A Ser D
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$78.89
Allen-Bradley
1756-CNBR/E
Allen-Bradley 1756-CNBR/E ControlLogix ControlNet Bridge Module 5 Mbps BNC NAP
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$33.89
Allen-Bradley
1756-ENBT
Allen-Bradley 1756-ENBT Ser. A ControlLogix EtherNet/IP 10/100 Bridge Module
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$337.89
Allen-Bradley
1756-CNB
Allen-Bradley 1756-CNB ControlLogix ControlNet Communication Bridge Module Ser D
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$97.89
Eupec
R55-00-278
Eupec Isopack R55-00-278 B6HK Thyristor Diode 3-Phase Half Control Bridge Module
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$51.89
Aeotec
ZGA008
Aeotec ZGA008 Zi-Stick Zigbee 3.0 USB Coordinator Gateway Dongle 2.4GHz Module
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$39.89
Allen-Bradley
1747-SDN
Allen-Bradley 1747-SDN Ser B SLC 500 DeviceNet Scanner Module FRN 4.015 PLC Part
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$24.89
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Guides for Communication & Network Modules
- 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.
- DrivesPowerFlex 525 vs PowerFlex 40: Replacing a 22B DriveFootprint, terminals, parameters, EtherNet/IP and Safe Torque Off: how to migrate from a PowerFlex 40 to a 525, and when not to.
Troubleshooting guides
- Troubleshooting1756-EN2T / ENBT Ethernet Module Faults: LEDs & CodesThe status display messages, OK/NET/LINK LEDs, duplicate IP rules, rotary switches and 888, Logix connection codes and the diagnostic web pages (CPU, duplex, errors).
- TroubleshootingPLC Lost Communication: EtherNet/IP, DH+ and DeviceNet1756 EtherNet/IP OK, NET and LINK LEDs and duplicate IP, 16#0203 vs 16#0204, DH+ node addresses and terminators, DeviceNet scanner codes, 121-ohm terminators and bus-off.
- 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.