Specifications

Section 11. Programming Resource Library
11-19
11.2.5 Telnet
Telnet can be used to access the same commands as the Terminal Emulator in
the LoggerNet Connect screen’s Tools menu and the PC400. Start a Telnet
session by opening a command prompt and type in:
Telnet xxx.xxx.xxx.xxx <Enter>
where xxx.xxx.xxx.xxx is the IP address of the network device connected to
the CR1000.
11.2.6 SNMP
Simple Network Management Protocol (SNMP) is a part of the IP suite used
by NTCIP and RWIS for monitoring road conditions. The CR1000 supports
SNMP when a network device is attached.
11.2.7 Ping
Ping can be used to verify that the IP address for the network device connected
to the CR1000 is reachable. To use the Ping tool, open a command prompt on
a computer connected to the network and type in:
ping xxx.xxx.xxx.xxx <Enter>
where xxx.xxx.xxx.xxx is the IP address of the network device connected to
the CR1000.
11.2.8 Micro-Serial Server
The CR1000 can be configured to allow serial communication over a TCP/IP
port. This is useful when communicating with a serial sensor. See the NL115
manual and the CRBASIC Editor Help for the TCPOpen() instruction for more
information.
11.2.9 Modbus TCP/IP
The CR1000 can perform Modbus communication over TCP/IP using the
Modbus TCP/IP interface. To set up Modbus TCP/IP, specify port 502 as the
ComPort in the ModBusMaster() and ModBusSlave() instructions. See the
CRBASIC Editor Help for more information.
11.2.10 DHCP
When connected to a server with a list of IP addresses available for assignment,
the CR1000 will automatically request and obtain an IP address through the
Dynamic Host Configuration Protocol (DHCP). Once the address is assigned,
use DevConfig, PakBus Graph, Connect, or a CR1000KD to look in the
CR1000 Status table to see the assigned IP address. This is shown under the
field name IPInfo.
11.2.11 DNS
The CR1000 provides a Domain Name Server (DNS) client that can query a
DNS server to determine if an IP address has been mapped to a hostname. If it