Allen-Bradley
1756-DNB
Allen Bradley 1756-DNB SER B PN-13849 Communication Module
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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
Mitsubishi
QJ61BT11N
Mitsubishi QJ61BT11N CC-Link Master Unit PLC Communication Module Industrial OEM
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Industrial part
U10C172.00
Spectrum U10C172.00 Cable Modem Internet Gateway Ethernet OEM Networking Device
Out of stock
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Request a quote: U10C172.00
Verifone
MX900-02
Verifone MX900-02 USB Ethernet I/O Module w CBL-332-003 12V Power Cable POS
Out of stock
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SMC
EX600-SEN1
SMC EX600-SEN1 EtherNet/IP Fieldbus SI Unit 24VDC 10/100Mbps Industrial
Out of stock
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Allen-Bradley
1775-KA
Allen-Bradley 1775-KA Communication Adapter Module Data Highway Modem Interface
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SMC
EX150-SDN1-X98
SMC EX150-SDN1-X98 VQ2000 Valve Manifold DeviceNet 24VDC Class2 0.1A 16 PNP
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Allen-Bradley
1747-SDN
Allenbradley SLC-500 1747-SDN C REV 01 97349373
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Allen-Bradley
1747-SDN
Allen Bradley SLC500 1747-SDN SER B Devicenet Scanner Module
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Mitsubishi
QJ61BT11N
Mitsubishi QJ61BT11N MELSEC-Q CC-Link Ver.2 Master/Local Network Module PLC
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Siemens
6DD1662-0AB0
Siemens 6DD1662-0AB0 SIMADYN D CS7 Communication Carrier Module 3 Sub-Modules
Out of stock
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Hima
F8621A
HIMA F8621A Co-Processor Industrial Communication Module 2x D-Sub Serial 2 LEDs
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Hima
F8621A
Hima F8621A Communication Module with Adapter
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Cisco
WS-X4748-RJ45V+E
Cisco WS-X4748-RJ45V+E Catalyst 4500E 48-Port PoE+ Gigabit Ethernet Line Card
Out of stock
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Reliance Electric
57C404B
Reliance Electric 57C404B 57404-2F AutoMax Network Communications Module PLC
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Allen-Bradley
1756-CNB/D
Allen-Bradley 1756-CNB/D ControlLogix ControlNet Communication Bridge Module
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HP
NC522SFP
HP NC522SFP 468349-001 Dual Port 10GbE SFP+ PCIe x8 Server Network Adapter Card
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Sencon
801-TS
Sencon CIM 801-TS CIM800 Communications Interface Module RS-422 RS-232 Serial
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Reliance Electric
57C404B
Reliance Electric 57C404B Network Communications Module 57404-2F AutoMax PLC
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Reliance Electric
57C380
Reliance Electric 57C380 AutoMax Passive Tap Communications Card Coaxial BNC
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Siemens
6ES7441-2AA04-0AE0
Siemens 6ES7441-2AA04-0AE0 Simatic S7-400 CP 441-2 Communication Module PLC
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ABB
S900
ABB S900 CI920N 3BDS014113 Communication Interface Module CIPB Profibus PLC I/O
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Allen-Bradley
1756-CNB/D
Allen-Bradley 1756-CNB/D ControlLogix ControlNet Bridge Communication Module PLC
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Siemens
6AV1242-0AB10
Siemens 6AV1242-0AB10 Simatic S5 Color Video Module CP527 Communication Card
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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 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.