Campbell LoggerNet, Инструкция по эксплуатации

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Section 13. Implementing Advanced Communications Links
Max Time online – This should be set to zero (disabled) for all of the stations
in the RF network. Otherwise, when the communications link is dropped
because this value is exceeded, communication will be re-attempted
immediately. Forcing the connection offline and back on quickly causes errors
because not enough time is allowed for the serial server to reset the TCP/IP
socket.
13.3.3 Special Considerations
To implement TCP/IP to RF communications, a serial server has to be
provided as the interface between TCP/IP and the serial connection on the RF
base. There are a number of Serial Server devices available including the
NL100 Network Link Interface manufactured by Campbell Scientific.
When connecting the RF Base to a Serial Server or the RS232 connector of the
NL100 you will need to build or modify a serial cable to either cut or remove
the RTS line. The other standard serial communication lines need to be in
place.
This special cable is needed to allow an RF base to work with the standard RS-
232 Port on other Internet serial devices. The drawing below depicts the cable
needed.
Third-Party
Serial Server
Campbell Scientific
RF232
RF Network Base
2
5
p
i
n
R
S
-
2
3
2
2
5
p
i
n
R
S
-
2
3
2
E
therNe
t po
rt
R
adi
o C
onne
cti
on
TxD
RxD
CTS
DSR
DTR
DCD
GND
RTS
2
8 8
7
20
6
5
4
3
2
7
20
6
5
4
3
The serial server must be configured for this application before operation. The
basic settings that must be configured are listed below. Depending on the
specific serial server, there may be other settings that must be configured for
proper operation.
IP address – This is the Internet Protocol address that is used by LoggerNet to
communicate with the serial server. This address must be unique on the
network where it is running and is typically assigned by a network
administrator. An IP address is typically entered as four numbers separated by
periods. As an example 198.199.32.45 would be an IP address. Do not use
leading zeros for any of the numbers in the IP address. An address of
198.192.035.002 would cause an error in the network configuration.
13-6