ABB INNIS21 Network Interface Module INFI 90
ABB INNIS21 network interface module
INFI 90 PLC module
ABB PLC interface module
Place of Origin:
SWEDEN
Brand Name:
ABB
Model Number:
INNIS21
ABB INNIS21 network interface module
,INFI 90 PLC module
,ABB PLC interface module
ABB INNIS21 Network Interface Module · Cnet Communication
Network interface hardware for ABB Harmony control-network communications, with documented support for Cnet / INFI-NET and multiple communication rates.
PART NUMBER / INNIS21The network-facing module
ABB documentation identifies INNIS21 as the network interface module used at the Cnet communication interface.
INNIS21 is the network interface at the front end of the Cnet communication interface. ABB describes the module as the intelligent link between nodes and Cnet, allowing nodes on the control network to communicate with one another.
The module is associated with the Harmony / INFI 90 communication architecture and is used as part of the Cnet interface arrangement rather than as a process I/O module.
Documented electrical and network data
Values below are taken from ABB documentation for the INNIS21 / INNPM12 communication module documentation.
| Manufacturer | ABB |
| Part Number | INNIS21 |
| Module Type | Network Interface Module |
| Network | Cnet (INFI-NET) |
| Power Requirement | +5 VDC at 825 mA; 4.1 W |
| Alternate Power Requirement | +5 VDC at 1.1 A; 5.5 W |
| Communication Rates | 10 Mbaud, 2 Mbaud, or 0.5 Mbaud |
| Cnet System Capability | Over 62,000 nodes in the system |
| Cnet-to-Cnet Interface Nodes | 250 |
| Nodes on a Single Network | 250, in combinations of Cnet-to-HCU and Cnet-to-computer interfaces |
| Plant Loop Capability | 64 nodes |
| Mounting | Occupies one slot in a standard module mounting unit |
| Ambient Temperature | 0 to 70 °C (32 to 158 °F) |
| Relative Humidity | 5% to 90% up to 55 °C, noncondensing; 5% to 40% above 55 °C |
| Atmospheric Pressure | Sea level to 3 km (1.86 mi) |
| Air Quality | Noncorrosive |
Node ↔ Cnet communication
The important point is the interface position: INNIS21 is the network-facing element connecting a node with Cnet.
Three documented Cnet rates
Communication rate is one of the useful technical identifiers for this module.
Where the module matters
The application focus is communication infrastructure, not field signal acquisition.
Cnet communication
Used as the network interface within ABB Harmony control-network communication arrangements.
Node-to-network interface
Provides the documented link between a system node and Cnet.
Large control-network architectures
ABB specifies support for systems exceeding 62,000 Cnet nodes, subject to the documented network architecture.
Plant Loop environments
ABB documentation specifies a Plant Loop capability of 64 nodes for the module.
Confirm the hardware designation
For spare-part sourcing, the part number should be checked against the installed module and system documentation.
For maintenance and spare-part sourcing
Provide the exact part number together with quantity and destination so availability can be checked against current inventory.
Part Number: INNIS21
Product Type: Network Interface Module
Network: Cnet / INFI-NET
Quantity: Specify required quantity in your RFQ.
Send the installation details with the part number
A complete RFQ gives the sales team enough information to check the correct hardware, quantity and delivery requirement.
INNIS21 technical and purchasing questions
Questions focused on the actual communication function and ordering verification.
Other automation hardware
Listed as related catalog models only. No replacement relationship is stated here.
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