RF407-Series Spread Spectrum Radio
7
17366). This is typically only used when creating a “phone to RF base”
configuration. The radio’s
Active Interface
setting must be set to
CS I/O ME
Master
and the other device (for example COM220) must be capable of being
configured as a modem enabled (ME) peripheral.
TABLE 7-2. CS I/O Pinout ( 9-PIN D-SUB MALE)
Pin
Function
I/O
Description
1
5V
I
Sources 5 Vdc to power peripherals
2
GND
GND for pin 1 and signals
3
Ring
O
Raised by modem to put datalogger
into telecommunications mode
4
RX
O
Serial data receive line
5
Modem Enable
I
Raised when datalogger determines
that associated modem raised the ring
line
6
Synchronous
Device Enable
I
Used by datalogger to address
synchronous devices; can be used as a
printer enable
7
CLK/Handshake
I/O
Used by datalogger with SDE and TX
lines to transfer data to synchronous
devices
8
12V supplied by
datalogger
PWR Sources 12 Vdc to power peripherals
9
TX
I
Serial data transmit line
I = Signal into the RF407 series, O = Signal out of the RF407 series
7.5 RS-232
The
RS-232
port is a DCE, 9-pin female D-Sub connector used to for
connecting the radio to the
RS-232
port of a datalogger, computer, or another
RS-232 device. This connection is most commonly used when connecting the
radio to a device without a
CS I/O
port or when linking two communication
peripherals, for example directly connecting the radio to an Ethernet serial
server.
The
RS-232
port can be connected to a DTE device, like a computer or NL201,
using the pn 10873, 9-Pin female to 9-Pin male serial cable. The
RS-232
port
can be connected to another DCE device, like a datalogger RS-232 or MD485
or cellular modem, using the 18663, 9-pin male-to-male null modem serial
cable.
When using RS-232, 12 Vdc power should be supplied to the power connector
using a field power connector or AC power adapter. The
Active Interface
setting must be set to
RS-232
, and the
RS-232
port configuration, like baud
rate, should match the device the radio is connected to.
RS-232 cannot be used for radio configuration using
DevConfig
.
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