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7IF321.7

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B&R 7IF321.7 is a network-capable System 2003 screw-in interface module with one electrically isolated RS485/RS422 port.
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Technical specifications for 7IF321.7

  • Manufacturer:
    B&R
  • Part Number:
    7IF321.7
  • Product Family:
    B&R System 2003
  • Product Type:
    System 2003 Isolated RS485/RS422 Interface Module
  • Stock:
    1
  • Interfaces:
    1
  • Interface type:
    RS485 / RS422
  • Electrical isolation:
    Yes
  • Network capability:
    Yes
  • Mounting:
    System 2003 screw-in module
  • Connector:
    9-pin female D-sub
  • Maximum transfer rate:
    115.2 kbaud
  • Maximum distance:
    1200 m without repeater
  • Power consumption:
    Maximum 1.4 W
  • Protection rating:
    IP20
  • Operating temperature:
    0 to 60°C horizontal; 0 to 50°C vertical
  • Storage temperature:
    -25 to 70°C
  • Relative humidity:
    5 to 95%, non-condensing
  • Tariff Code:
    8538900000
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Interface Network Setup Isolation Application
  • Provides one RS485 or RS422 interface
  • Network mode and communication frame are project-defined
  • The interface is electrically isolated

7IF321.7 is a network-capable System 2003 screw-in interface module with one electrically isolated RS485/RS422 port.

It adds differential serial networking to a compatible System 2003 CPU for supported multidrop or point-to-point devices.

Before installation or replacement, verify the RS485 or RS422 mode, network topology, baud rate and frame, node addressing, termination and bias, connector pinout, shielding and ground reference.

Availability, condition, price, and shipping time for 7IF321.7 are confirmed during quotation.

B&R 7IF321.7 Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Provides one RS485 or RS422 interface
  • Installs as a System 2003 screw-in module
  • Supports network-capable differential serial communication
  • Network mode and communication frame are project-defined
  • Termination and bias must match the physical topology
  • Node addressing must be unique where the selected protocol requires it
  • The interface is electrically isolated
  • Shield and protective-earth practice still require verification
  • Isolation does not correct reversed data pairs or incorrect termination
  • RS485 multidrop communication with supported industrial devices
  • RS422 point-to-point differential serial links
  • Electrically isolated serial networking for System 2003 machine-control stations
Description
B&R 7IF321.7 is a network-capable System 2003 screw-in interface module with one electrically isolated RS485/RS422 port.

It adds differential serial networking to a compatible System 2003 CPU for supported multidrop or point-to-point devices.

Before installation or replacement, verify the RS485 or RS422 mode, network topology, baud rate and frame, node addressing, termination and bias, connector pinout, shielding and ground reference.
Alternative Names
7IF321.7 7IF3217 7IF321 7 B&R 7IF321.7 B&R System 2003 7IF321.7
Technical notes
B&R 7IF321.7 must be matched by complete material number, compatible System 2003 CPU or station, slot and terminal map, power and field wiring, saved project and connected devices. Back up the configuration and perform a controlled functional test after replacement.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How should customers select RS485 or RS422 operation for B&R 7IF321.7?
Match the remote device’s electrical standard, wiring topology, duplex mode and connector pinout. Configure B&R 7IF321.7 for RS485 or RS422 in the software before commissioning; the two modes must not be selected solely by cable length or the number of connected devices.
Why can a new B&R 7IF321.7 show communication timeouts?
Check selected interface mode, pair polarity, node address, baud and frame, termination and bias, cable shield, ground reference and protocol configuration.
Where should termination be fitted on a B&R 7IF321.7 network?
Termination belongs at the physical ends of the differential bus, not automatically at every node; follow the device and network documentation.
Does electrical isolation on B&R 7IF321.7 remove the need for grounding checks?
No. Isolation reduces coupling between circuits, but shield bonding, reference potentials, surge exposure and cabinet grounding still affect reliable communication.
Can B&R 7IF321.7 replace B&R 7IF311.7 without rewiring?
No. RS485/RS422 and RS232 use different electrical standards and pinouts; confirm the external device, cable and project before substitution.
What should be recorded before replacing B&R 7IF321.7?
Record the CPU slot, RS485 or RS422 mode, connector pinout, node and protocol settings, baud and frame, termination, bias, shield and network topology.
What acceptance tests matter after installing B&R 7IF321.7?
Verify every node, error counters and timeouts, operation at normal bus load, power-cycle recovery and the real machine function that relies on the serial network.

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