Applications
The
TC8916 is often used in SCADA applications with a Star topology to
link a SCADA Host to RTUs. The TC8916's RS-232/RS-422 user ports are
extended via either 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.
Top
Description
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) 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.
An
"Anti-Streaming" capability is provided for each channel to
prevent a single node failure from disabling the system.
A channel will be disabled if it transmits a Tx data string beyond
a set length of time. Once
OFF, it will attempt to resume communications after the jam condition
ends.
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.
The TC8916 is available in 8-Channel (7 + Host), 16-Channel (15 +
Host) and 24-Channel (23 + Host) versions.
Diagnostic
LEDs for Tx and Rx are included for each channel.
Additional LEDs are provided for Alarm, Power A, Power B, and Vcc.
Connectors are RJ-11 Female. Power
is 12VDC@ 400mA or 115/230VAC with an external power cube. The TC8916R PC
Card version fits into TCRM191 and TCRM195
rackmount card cages.
Top
Technical
Specifications
| Data
Rates |
| Async |
up
to 120Kbps |
| Channel
Capacity |
| Standard |
8,
(1 Host + 7 Devices) |
| Optional |
16
(1 Host + 15 Devices) |
| Optional |
24
(1 Host + 23 Devices) |
| Electrical |
| Interface |
(DCE)
RS-232 or RS-422 |
| Connector |
RJ11
Female |
| System
|
| Bit
Error Rate |
1
in 109
or better |
| Visual
Indicators |
| Alarm,
Power A, Power B, Vcc, Timer-1, Timer-2 |
| Channel
Status |
| Host
BRD, Host RSP, BRD & RSP (for ea. ch.) |
|
| Power |
| Standard |
12VDC @
400mA |
| Optional |
115/230VAC (with external power cube) |
|
Temperature
|
| Operating |
-10° to
50°C |
| Hi-Temp
(optional) |
-20° to 70°C |
| Storage |
-40° to 90°C |
| Humidity |
95% non-condensing |
| Physical
(Details) |
| Height |
(3.53 cm) 1.39" |
| Width |
(18.13 cm) 7.14" |
| Depth |
(24.89 cm) 9.80" |
| Weight |
(266
gm) .6 lbs. |
* Contact factory for higher requirements
|
|
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