Campbell Scientific NL200/NL201 Network Link Interface - Manual (Page 50)

Appendix C. NL200/201 Settings
connection is functional as the device does not know the frequency or nature of
the expected data. Set to 0 for no timeout (not recommended). (range 0..999)
(seconds)
RS-232 PakBus Beacon Interval
This setting, in units of seconds, governs the rate at which the NL200/201 will
broadcast PakBus® messages on the associated port in order to discover any
new PakBus neighboring nodes. It will also govern the default verification
interval if the value of the Verify Interval setting for the associated port is zero.
RS-232 PakBus Verify Interval
This setting specifies the interval, in units of seconds, that will be reported as
the link verification interval in the PakBus® hello-transaction messages. It
will indirectly govern the rate at which the NL200/201 will attempt to start a
hello transaction with a neighbor if no other communication has taken place
within the interval.
Neighbors Allowed RS-232
Example: (129,129) (1084,1084)
In the example above, nodes 129 and 1084 are assigned as neighbors to the
NL200/201.
This setting specifies, for a given port, the explicit list of PakBus® node
addresses that the NL200/201 will accept as neighbors. If the list is empty (the
default value), any node will be accepted as a neighbor. This setting will not
affect the acceptance of a neighbor if that neighbor’s address is greater than
3999. The formal syntax for this setting follows:
neighbor := { "(" range-begin "," range-end ")" }.
range-begin := pakbus-address. ;
range-end := pakbus-address.
pakbus-address := number. ; 0 < number < 4000
RS-232 Modbus Timeout
This setting determines how long the MODBUS/TCP to MODBUS/RTU
gateway will wait for an answer from the MODBUS slave device(s) attached to
the RS-232 port. If no answer is received within the timeout period, the
MODBUS/TCP server will reply to the MODBUS/TCP client with error code
0x0B(Target Device Failed to Respond). (milliseconds)
RS-232 TCP Serial Client IP Address
This setting specifies the IP address of the outgoing TCP Serial client
connection that the device should maintain. If the connection fails, the device
will retry until the connection succeeds. No entry specifies that no client
connection will be made.
C-6