Model TC8916
Broadcast & Receive Device
 (8-24 Port: RS232/RS-422)

TC8916S Standalone Unit

TC8916R (Housed in TCRM195 Rackmount Card Cage,
2-Card Unit Shown)

Features  Product or Application Questions (click here)

  • Supports Polled Response SCADA Networks
  • RS-232 or RS-422
  • Up to 24 Channels; Can be Cascaded
  • Anti-Streaming Capability on Each Channel
  • Hardened Temperature version exceeds NEMA & CALTRANS specs
  • LED Indicators for Each Channelís Tx & Rx Status
  • Stand Alone or Rackmount


Designed specifically for SCADA and process control applications with a Star topology, the TC8916 Broadcast & Receive Device broadcasts & receives information from remote devices. Transparent to all data sent in either direction, it is typically used to link SCADA Hosts to remote terminal units (RTUs) or programmable logic devices (PLCs) via fiber optic or metallic cable.

The host port on the TC8916 receives a broadcast message from the host controller and broadcasts the message out through up to 23 ports at the same time. The broadcast message (sent by SCADA HOST) has embedded Identification (ID) numbers for each RTU. Only the RTU that matches this ID number will respond.

The TC8916 supports data rates up to 120 Kbps and is compatible with both RS-232 and RS-422 interfaces. Interfaces can be mixed or matched in increments of four.


TC8916 Specifications

Channel Capacity
TC8916 8 (Host +7), 16 (Host +15), or
24 (Host +23)Channels
Data Rates
TC8916 DC to 120Kbps (async)
Connector RJ11 Female
Type RS232 or RS422
Bit error rate 1 in l09 or better
Visual Indicators Tx, RX for each channel, Alarm,  Power
Power source I2VDC @300ma
optional: 115 or 230VAC with external power cube
Operating: TC8916
-100C to 500C
-200C to 700C
Storage -400C to 900C
Humidity 95% non-condensing
Stand Alone Unit Height: 8 Channel  (6.5cm) 1.30"
           16 Channel  (6.5cm) 2.60"
           24 Channel  (6.5cm) 3.90"
  Width (18.0cm) 7.20"
  Depth (25.0cm) 9.75"
  Weight (1.36kg) 3.0 lb

Typical Application (Application Questions)

The TC8916 is often used in SCADA applications with a Star topology to link a SCADA Host to RTUs. The TC8916ís RS-232/RS- 422 user ports can be extended with the use of a fiber modem or multiplexer. When the Host Polling Device sends information to the TC8916 via the RS-232/RS-422 Host Port, it will broadcast to each of the RS-232/RS-422 user ports. The addressed remote device(s) will then respond back to the Host Device.