"I am communicating with kWh
(energy) meters that have the RS485 built in, the
port-powered converter's auto-turnaround feature works
really well for my application, and I don't have to
change any configuration."
Peter
CommFront offers
a range of high-quality, industrial-grade, port or
externally-powered RS232 RS485 RS422 TTL converter products.
These plug-and-play products operate within a
wide temperature range (-40ºF
to 185ºF / -40ºC to 85ºC),
feature 600W surge protection and 15kV static protection, and come with built-in 120 Ohm terminators for easy installation. Whether your environment is commercial or
industrial, "clean" or "noisy"*, our converter products
provide safe, easy, and cost-effective solutions for your
data-conversion applications.
* A "noisy" environment
is an area
surrounded by ground loops, transient surges
and spikes, which could potentially harm your expensive
equipment such as computers and data communication devices.
The CommFront opto-isolated converters and isolators provide
simple and effective ways to protect your devices from such
potential harms.
The CVT-485-1 is
an industrial grade (wide temperature range
with surge & static protection) port-powered bi-directional
RS232
to RS485 converter, which can be used to convert any
standard RS-232C port into a 2-wire half-duplex RS-485 port and vice
versa.
The unit is powered from the RS232
data line, it also supports data direction auto-turnaround,
therefore, no external power or flow control is required.
The CVT-422-1 is
an industrial grade (wide temperature range with
surge & static protection) port-powered bi-directional
RS232 to RS422 converter,
which can be used to convert any standard RS-232C port into a
4-wire full-duplex RS-485 or RS-422 port and vice versa.
The unit is powered from the RS232 data line, it also supports
data direction auto-turnaround, therefore, no external power or flow
control is required.
The
CVT-485_422-1 is
an industrial grade (wide temperature range with
surge & static protection) port-powered bi-directional
RS232 to RS485 / RS232 to RS422
converter,
which can be used to convert any standard RS-232C port into a
2-wire RS-485 port, or a 4-wire full-duplex RS-485 or RS-422
port and vice versa.
The unit is powered from the RS232 data line, it also supports
data direction auto-turnaround, therefore, no external power
or flow control is required.
The CVT-485-3 is
an
industrial grade (wide temperature range with surge & static
protection) optically isolated bi-directional RS232 to RS485 converter, which can be used to convert any standard RS-232C
port into a 2-wire half-duplex RS-485 port and vice versa.
This product features
opto-isolation circuitry, which effectively protect your RS-232
devices from
ground
loops, transient surges and spikes.
The unit is powered from the RS-232 data line; it
also supports data direction auto-turnaround. Therefore, no
external power or flow control is required.
The CVT-422-3 is
an
industrial grade (wide temperature range with surge & static
protection) optically isolated bi-directional
RS232 to RS422 converter, which can be used to convert any
standard RS-232C port into a 4-wire full-duplex RS-485 or RS-422
port and vice versa.
This product features
opto-isolation circuitry, which effectively protect your
RS-232 devices from
ground
loops, transient surges and spikes.
The unit is powered from the
RS-232 data line; it also supports data
direction auto-turnaround. Therefore, no external power or
flow control is required.
The CVT-485_422-3 is
an
industrial grade (wide temperature range with surge & static
protection) optically isolated bi-directional RS-232 to RS-485 / RS-232 to RS-422
converter, which can be used to convert any standard RS-232C
port into a 2-wire half-duplex RS485 port or a 4-wire
full-duplex RS-485 or RS-422 port and vice versa.
This product features
opto-isolation circuitry, which effectively protect your RS-232
devices from
ground
loops, transient surges and spikes.
The unit is powered from the RS-232 data line; it
also supports data direction auto-turnaround. Therefore, no
external power or flow control is required.
The CVT-232A-3 is
an industrial grade (wide temperature range with surge &
static protection) port-powered RS-232 isolator. The unit
optically
isolates three (3) RS-232 lines (TX, RX and GND), which
effectively protects your RS-232 devices from
ground
loops, transient surges and spikes.
Optical isolation
also eliminates ground loop and noise problems.
The unit is powered from the RS-232 data line
(self-powered), and therefore,
no external power or RTS, DTR is required.
The CVT-232B-3 is
an industrial grade (wide temperature range with surge &
static protection) port-powered RS-232 isolator. The unit
optically
isolates seven (7) RS-232 lines (TX,
RX, RTS, CTS, DTR, DSR and GND), which
effectively protects your RS-232 devices from
ground
loops, transient surges and spikes.
Optical isolation
also eliminates ground loop and noise problems.
The unit is powered from the RS-232 data line
(self-powered), and therefore,
no external power or RTS, DTR is required.
The RPT-232-3 is
an industrial
grade (wide temperature range with surge & static
protection)
optically isolated RS-232 data repeater (extender) (TX, RX,
and GND), which works in pairs to extend the full-duplex
RS-232 distance up to 1.8 miles (3 km). This product
features opto-isolation circuitry, which effectively protect
your RS-232 devices from
ground
loops, transient surges and spikes.
The unit is powered from the
RS-232 data line, and therefore, no external power or RTS,
DTR is required.
The RPT-485_422-2 is
an industrial grade (wide temperature range
with surge & static protection) bi-directional
RS485/RS422
repeater/converter, which can be used to extend the RS-485
or RS-422 distance to up to 4000 ft (1.2km). It
can also be used to convert a two-wire RS-485 signal into a
four-wire RS-422 signal, and vice versa.
The unit
is powered from an external 5VDC power supply. It features data direction auto-turnaround,
and therefore,
no flow control is required.
The TTL-232-1 is
an industrial grade (wide temperature range
with surge & static protection) port-powered bi-directional
RS232 to TTL/CMOS 5V converter, which can be used to convert
any standard RS-232C port into a 5VDC
TTL/CMOS compatible level and vice versa.
The unit is powered from the
RS-232 data line, and therefore, no external power or RTS, DTR is required.
The TTL33-232-1 is
an industrial grade (wide temperature range
with surge & static protection) port-powered bi-directional
RS232 to 3.3VDC TTL/CMOS converter, which can be used to
convert any standard RS-232C port into a 3.3VDC TTL/CMOS compatible level and vice
versa.
The unit is powered from the RS-232 data line, and
therefore, no external power or RTS, DTR is required.
The TTL-485-2 is
an industrial grade (wide temperature range
with surge & static protection) bi-directional
RS485 to TTL/CMOS
5V converter, which can be used to convert RS-485 to 5VDC
TTL-compatible levels and vice versa.
The unit is powered from an external
5VDC power supply. It supports data direction auto-turnaround,
and therefore, no flow control is required.
The TTL-485_422-2 is
an industrial grade (wide temperature range
with surge & static protection) bi-directional
RS422/RS485 to TTL/CMOS
5V converter, which can be used to convert RS485 to 5VDC
TTL-compatible levels and vice versa. It is also ideal for
extending the full-duplex TTL distance.
The unit is powered from an external
5VDC power supply. It supports data direction auto-turnaround,
and therefore, no flow control is required.
