Pepperl+Fuchs FB8211B2-0756 Com Unit for MODBUS TCP

Pepperl+Fuchs FB8211B2-0756
Item Number: FB8211B2-0756
  • Interface between the I/O modules and the PCS/PLC
  • Com unit for 80 analog or 184 digital channels
  • Communication via MODBUS TCP
  • Installation in suitable enclosures in Zone 1
  • Module can be exchanged under voltage (hot swap)
  • HART communication via MODBUS TCP
  • Configuration via FDT 1.2 DTM
  • Non-volatile memory for configuration and parameter settings
  • Self configuration in redundant systems
  • Permanently self-monitoring
  • Outputs drive to safe state in case of failures
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  • Overview
  • Datasheet
  • Alternative numbers
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  • Comments

Damaging gasdesigned for operation in environmental conditions acc. to ISA-S71.04-1985, severity level G3

AddressingIP address assigned via Ethernet
Degree of protectionIEC 60529
EAC approvalRussia: RU C-IT.MIII06.B.00129
Ethernet addressIP V4 address (factory standard setting:, auto IP, DHCP)
Shock resistanceshock type I, shock duration 11 ms, shock amplitude 15 g, number of shocks 18
Connectionvia backplane
Supported I/O modulesall FB remote I/O modules
Massapprox. 750 g
Relative humidity95 % non-condensing
Ambient temperature-20 ... 60 В°C (-4 ... 140 В°F)
Degree of protectionIP20 (module) , a separate housing is required acc. to the system description
HART communicationvia Ethernet
System informationThe module has to be mounted in appropriate backplanes (FB92**) in Zone 1, 2, or outside hazardous areas. Observe the corresponding EC-type examination certificate.
Connectionbackplane bus
Power dissipation2 W
Connectionbackplane bus
Station connectiondirectly to PCS or PLC or via hubs or switches
Storage temperature-25 ... 85 В°C (-13 ... 185 В°F)
Redundancyvia left front connector
Vibration resistanceEN 60068-2-6
Supplementary informationEC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see
Fieldbus standardIEEE 802.3
Fieldbus typeMODBUS TCP
Relative humidityEN 60068-2-56
Connection typewired to Ex e terminals via backplane
Connectionvia right front connector in connection with service adapter SERV8001
Environmental testEN 60068-2-14
Bus lengthmax. 100 m (Ethernet standard)
Dimensions57 x 107 x 132 mm (2.2 x 4.2 x 5.2 inch)
Number of channels per stationmax. 80 analog, max. 184 digital
Rated voltage5 V DC , only in connection with the power supplies FB92**
Damaging gasEN 60068-2-42
Shock resistanceEN 60068-2-27
LED indicationLED green (power supply): On = operating, fast flash = cold start
LED red (collective alarm): On = internal fault, flashing = no Modbus TCP connection
LED yellow (operating mode): flashing 1 (1:1 ratio) = active, normal operation; flashing 2 (7:1 ratio) = active, simulation
Electromagnetic compatibilityNE 21
Vibration resistancefrequency range 10 ... 150 Hz; transition frequency: 57.56 Hz, amplitude/acceleration В± 0.075 mm/1 g; 10 cycles
frequency range 5 ... 100 Hz; transition frequency: 13.2 Hz amplitude/acceleration В± 1 mm/0.7 g; 90 minutes at each resonance
Power consumption2.5 W
EU-Type Examination CertificatePTB 97 ATEX 1074 U
Transfer rate10 MBit/s


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