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PRODUCT DESCRIPTION
CM577-ETH connects AC500 to Ethernet applications
ABB CM577-ETH adds Ethernet communication to a supported AC500 CPU through the terminal-base coupler bus. Its two RJ45 sockets connect through an integrated two-port switch, with 10 or 100 Mbit/s transmission.
Order 1SAP170700R0001 identifies CM577-ETH. The documented applications include Control Builder programming, UDP function-block communication and Modbus TCP master or slave operation. Preserve the installed network configuration and verify its applicability to the CPU before replacement.
Order 1SAP170700R0001 identifies CM577-ETH. The documented applications include Control Builder programming, UDP function-block communication and Modbus TCP master or slave operation. Preserve the installed network configuration and verify its applicability to the CPU before replacement.
BEFORE YOU BUY
Identify the intended Ethernet task before ordering
ACTUAL APPLICATIONS
Where CM577-ETH provides Ethernet connectivity
ABB explicitly describes three communication uses in the CM577-ETH hardware manual. Each requires the applicable engineering configuration and a validated network connection.
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01 · ENGINEERING ACCESS
Connect Control Builder to the controller
Use the documented TCP/IP connection for PC and Control Builder programming access. Preserve the intended engineering route and controller configuration. Validate access with the installed software before allowing changes to an operating automation system. -
02 · UDP MESSAGING
Exchange application datagrams
Implement the documented UDP communication path with ETH_UDP_SEND and ETH_UDP_REC. Check the application configuration and receiving equipment, then validate the exchanged values. Separate the success of the Ethernet physical link from correct execution of the function-block task. -
03 · MODBUS TCP
Link master and slave applications
Apply the documented Modbus TCP master or slave role for the engineered data exchange. Match the project settings to the communicating equipment and verify the intended transactions. Restore the approved configuration before accepting process data from a replacement module.
Technical specifications for CM577-ETH
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Product ModelCM577-ETH
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Spare Model1SAP170700R0001
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Product ParametersEthernet TCP/IP Communication Module
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ManufacturerABB
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Ethernet link rates10 or 100 Mbit/s
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Physical connectorsTwo RJ45 sockets
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Integrated switchingInternal two-port Ethernet switch
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Supported protocolsTCP/IP, UDP/IP and Modbus TCP
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Modbus TCP rolesMaster and slave
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Documented CPU familiesPM571-xxx, PM581-xxx and PM591-xxx
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CPU data interface8 kByte dual-port memory
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Internal power sourceTerminal-base coupler interface
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Typical coupler-bus current420 mA
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ProcessorEC1, 160 pins; 48 MHz
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Internal RAM256 kByte
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Firmware flash memory512 kByte
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Configuration retentionNon-volatile Flash EPROM
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Operating ambient0-60 C
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Status indicatorsPWR, RDY, RUN, STA, ERR and port LINK/ACT indicators
View all additional
Alternative Names
CM577-ETH
1SAP170700R0001
CM577 Ethernet TCP/IP coupler
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
AC500 ETHERNET COMMUNICATION
Separate network connectivity from application configuration
ABB CM577-ETH adds Ethernet communication to a supported AC500 CPU through the terminal-base coupler bus. Its two RJ45 sockets connect through an integrated two-port switch, with 10 or 100 Mbit/s transmission.
The applicable ABB manual identifies PM571-xxx, PM581-xxx and PM591-xxx CPU families. Mount the coupler to the left of the CPU on the supported terminal base and account for its typical 420 mA coupler-bus demand.
Use the integrated switch for the documented physical connections, then configure the actual communication service. TCP/IP programming, UDP function-block exchange and Modbus TCP master/slave operation are distinct tasks and must be checked independently.
Features:
- Match CM577-ETH and 1SAP170700R0001
- Preserve the supported CPU and terminal base
- Restore the intended Ethernet application
The ABB CM577-ETH requires its network configuration and supported CPU arrangement to be checked before system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
The documentation used here is ABB AC500 Hardware V2, issued March 2007. Its CM577-ETH section establishes the module identity and technical functions, but does not establish a current lifecycle or automatic replacement by a newer Ethernet module.
Record the supplied option set, CPU family, terminal-base position and configured Ethernet service. Preserve the validated project before removal; optional webserver memory must not be assumed present on every module.
Switch off supply and process voltages before module exchange. After restoration, distinguish power, readiness, running communication and detected Ethernet traffic, then test the specific application transactions before release.
Features:
- Preserve the configured Ethernet service
- Check optional functions on the supplied unit
- Validate application transactions after exchange
The ABB CM577-ETH requires replacement verification of the supported controller arrangement, installed options and Ethernet configuration before commissioning.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: The Amikon manual includes the exact CM577-ETH section from ABB AC500 Hardware V2, March 2007. Verify this edition against the installed hardware and software; optional functions are not established by the model name alone.
Features:
- CM577-ETH documentation distinguishes physical links, protocol services and option memory
- Software licensing and project backups remain the customer's responsibility
- Accessories are supplied only when listed in the quotation
Documentation for the ABB CM577-ETH must match the supported CPU and configured Ethernet application; confirm manual availability in the written quotation.
Also searched as
Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed size13.4 × 7.3 × 4.3 cm
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Shipping weight0.16 kg
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference8517620000
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OriginSwitzerland
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Part checked
Full suffix recorded -
Condition checked
Label and appearance -
Packing checked
Antistatic protection -
Tracking supplied
Established couriers -
Sandy Lin
Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about CM577-ETH
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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Can the two CM577-ETH sockets replace a separate local Ethernet switch?
ABB documents an internal two-port switch, allowing direct Ethernet connection without an additional switch at that connection point. This does not remove the need to design the wider network or validate its topology. -
Which function blocks implement UDP messaging through CM577-ETH?
The applicable hardware manual names ETH_UDP_SEND and ETH_UDP_REC. Check their configuration in the installed engineering project; successful Ethernet link detection does not establish a working UDP application. -
Does CM577-ETH require the same configuration for programming access and Modbus TCP?
No. ABB distinguishes TCP/IP access for PC/Control Builder programming from Modbus TCP master/slave communication. Restore the configuration for the actual task rather than treating every TCP/IP connection as interchangeable. -
Where is the CM577-ETH configuration retained?
The manual states that configuration is stored non-volatile in Flash EPROM. Use the applicable system configurator and preserve the approved configuration before replacement. -
Does a flashing STA LED prove that the intended application is exchanging valid data?
STA flashing indicates that an Ethernet frame was detected. Verify the specific programming, UDP or Modbus transaction separately; network traffic alone does not confirm correct application data. -
What does non-cyclic RUN flashing mean on CM577-ETH?
ABB identifies this RUN pattern as a parameterization error. Distinguish it from cyclic flashing, which indicates readiness for communication, and a steady RUN indication, which indicates communication is running. -
Does the additional webserver memory specification apply to every supplied CM577-ETH?
ABB labels the external 2 x 128 kByte RAM and 2 MByte flash as webserver-option memory. Do not infer that the option is supplied from the general module designation; verify the delivered configuration. -
How does adding CM577-ETH affect the terminal-base power budget?
The documented typical coupler-bus current is 420 mA. Include that demand in the complete CPU and coupler arrangement and confirm the chosen terminal base supports the installed number of communication modules.
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