Drop and Insert Multi-Drop Fiber modem

TC2200  Multi-drop Bus or String Fiber Optic Modem
Each unit comes with one or two pairs of fiber interfaces and  RS-232 or RS-422/RS-485. 

  • Async Data Rates to 38.4 Kbps
  • Bus or String Topologies
  • Dual Master Capability
  • Multimode or Single Mode (850/1300/1550nm)
  • Dual RS-232, Single RS-422/RS-485 Interfaces
  • Anti-Streaming (Anti-Jabber)
  • Local Dry Contact Alarm Relay
  • Hardened Temperature (-40C to 70C) Version Optional
  • Rackmount or Standalone
  • Extend Telephone Lines with TC1900 RS-232/Fiber Phone Extenders

Renowned for its high reliability, the TC2200 Multi-Drop Modem is ideal for Bus or String communication links in SCADA, Traffic Control, Industrial Process Control and security networks.  It is frequently used to interconnect Remote Terminal Units (RTUs) or Programmable Logic Controllers (PLCs) in Utility substation SCADA Networks.

Available for either Bus or String topologies, the TC2200 Multi-Drop Fiber Optic Modem links monitoring devices (RTUs or PLCs) fitted with RS-232, RS-422 or RS-485 interfaces to a Host controller or CPU.

The electrical interface can be either RS-232, RS-422 or RS-485.  The RS-485 electrical port can be multi-dropped.  Asynchronous data rates can be up to 38.4 Kbps. A special version (TC2200T) is available for hardened temperature applications (-40C to 70C).

Each unit comes with one or two pairs of fiber interfaces and either two channel RS-232 or one channel RS-422/RS-485.  The second RS-232 channel can be used for data, RTS/CTS handshaking signals or as a telephone extension with the Model TC1900 "Quick-Talk" Telephone Extenders.  

For applications requiring maximum reliability, the TC2200 is also available in a dual Master "Fault Tolerant" version, providing a Back-up Master unit.  In the event of cable breakage or a defective Remote unit, the backup Master will start polling the Remote units from the opposite direction.  The primary and secondary Master units can be located anywhere on the fiber bus network.  Remote units can be daisy-chained.

The "Anti-Streaming" capability is standard.  Anti-streaming prevents a single node failure (e.g. "babbling") from bringing down the entire network.  16 Diagnostic LEDs are provided for "Tx," "Rx," "Fault" and "Power".

The TC2200 is compatible with all popular types and sizes of fiber optic cable and is available multimode (850/1300nm) or single mode (1300/1550nm).  Fiber optic connectors are ST or FC.  Electrical connectors are DB25 female.  Power is 12VDC; optional 24VDC, -48VDC, or 115/230VAC with an external power cube.

For ordering purposes, the TC2200 is the Master Unit; TC2201 is the Slave unit. 

Technical Specs    

Data Rates
Async (RS-232, RS-422, RS-485) Up to 38.4 Kbps
Transmitter LED, ELED
Receiver PIN Diode
Wavelength 1300nm Multimode
1300nm, 1550nm Single Mode
Fiber Optic Connectors ST or FC
Loss Budget*
(850nm, 1300nm, 1550nm)
Multimode (62.5/125m): 15dB
Single Mode (9/125m): 15dB
Connector DB25 Female
Interface (DCE or DTE) RS-232, RS-422, or RS-485 (2 or 4 wire)
Bit Error Rate 1 in 109 or better
Diagnostic Functions
Local and Remote Loopback, Signal Generator, Disable Alarm
Visual Indicators
System Status PWRA,  PWRB, Vcc, ALARM, Master, Slave 
Optical Signal Status RxA, RxB, Sync-A, Sync-B
Electrical Signal Status BRD-1, BRD-2, RSP-1,  RSP-2, DCE, DTE
Dry Contact Normal OPEN
Standard 12VDC @ 500mA
Optional 24VDC, -48VDC, or 115/230VAC (with external power cube)
Operating -10 to 50C
High Temp (Optional) -40 to 70C
Storage -40 to 90C
Humidity 95% non-condensing
Physical (Standalone/Wallmount Unit)
Height (3.53 cm) 1.4"
Width (18.14 cm) 7.1"
Depth (16.57 cm) 6.5"
Weight (544 gm) 1.2 lbs


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