B&B Electronics ADAM-5000E - Datasheet - Manual (Page 2)

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Feature Details
Two-wire Communication
ADAM-5000/485 and ADAM-5000E systems use a single twisted pair of wires to transmit
and receive data. Special circuitry ensures reliable communications and suppresses
line noise on communication lines. This reduces overall network cost by simplifying
installation and minimizing the number of cables, connectors, communication repeaters
and filters required.
Transient Protection
High-speed transient suppressors protect the system from dangerous voltage surges or
power spikes from both the power supply input and the communication ports.
Network Expansion
By using the ADAM-4510 repeater to amplify or boost existing signals, your networks
can be stretched beyond 1.2 km.
Each ADAM-4510 repeater enables you to add up to 32 ADAM-5000 units to your network,
extending the network by another 4000 feet (1.2 km). Up to 256 ADAM-5000/485, ADAM-
5000E units can be connected to a single RS-485 network.
RS-232 to RS-485 Conversion
RS-232 serial ports are standard with most industrial computer systems. Though widely
accepted, RS-232 has limited transmission speed, range and networking capabilities.
The RS-485 standard overcomes these limitations by using differential voltage lines for
data and control signals.
ADAM-4520 is an isolated converter that lets you take advantage of RS-485 on an RS-232
system by converting RS-232 signals to RS-485 signals. Software written for half-duplex
RS-232 may also be used without modification. ADAM-4520 helps you build an industrial
grade, long distance communication system with standard PC hardware.
Wall mounting
hole
Screw-terminal for
RS-485
Power terminal
Diagnostic LEDs
Wall mounting
hole
Plugged in I/O
module
Node ID switch
DB9-F for
RS-485 Snap-lock
Industrial connector
DB9-M for
RS-485
DB9-F with RS-232
for configuration
Intelligent RS-485 Data Flow Control
The RS-485 communication protocol will support half-duplex communication. Only two
wires are needed for transmitting and receiving data. Handshaking signals such as RTS
(Request to Send) normally control the direction of the data flow. A special I/O circuit in
the ADAM-4510 and ADAM-4520 modules sense the data flow direction and automatically
switches the transmission direction, making handshaking signals unnecessary. This makes
the RS-485 bus control completely transparent to the user.
Built-in RS-232 Communication
The RS-232 port is used to connect to a host PC for programming, control and monitoring
of applications. This aids troubleshooting, and allows a PC to be linked with all the I/O
points of the I/O modules.
ASCII-based Protocol and Modbus/RTU Protocol
ADAM-5000 commands are in ASCII format. ADAM applications can be written in any high-
level language that supports ASCII string functions, such as C, Pascal or BASIC. ASCII
support means you can use virtually any computer to manage your ADAM network.
Furthermore, the Modbus/RTU protocol is supported for connecting to 3rd party
controllers.
ADAM-5000/485
ADAM-5000E