Campbell RF407 Series, Руководство по эксплуатации продукта, Страница: 21 / 46

Table 6-1: CS I/O Pinout
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 data logger into
telecommunications mode
4 RX O Serial data receive line
5 Modem Enable I
Raised when data logger determines that associated
modem raised the ring line
6
Synchronous device
enable
I
Used by data logger to address synchronous devices; can be
used as a printer enable
7 CLK/handshake I/O
Used by data logger with SDE and TX lines to transfer data
to synchronous devices
8
12V supplied by
data logger
PWR Sources 12 VDC to power peripherals
9 TX I Serial data transmit line
I = Signal into the radio, O = Signal out of the radio
6.5 RS-232
The RS-232 port is a DCE (data communications equipment), 9-pin socket (female) connector
used to connect the radio to the RS-232 port of a data logger, 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 communications peripherals; for example, directly connecting
the radio to an Ethernet serial server. See
Table 6-2 (p. 16) for the RS-232 port pinout.
The RS-232 port can be connected to a DTE (data terminal equipment) device, such as a
computer or NL201, by using a 9-pin serial data cable. The RS-232 port can be connected to
another DCE device, such as a data logger RS-232 port, MD485, or cellular modem, by using a 9-
pin null-modem serial cable.
When using RS-232, supply 12 VDC power to the Power connector by using a Campbell Scientific
Field Power Cable 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 Device Configuration Utility .
RF407-Series Spread Spectrum Radio 15