Instruction manual

Operation
12 025-9209
All RTUs in a system can have the same group call address, or you can achieve a zoning
effect by assigning one address to one group of RTUs and another address to a different
group. The group call address should not be the same as the RTUs DIP switch address.
Factory Defaults
This menu selection will allow the user to reset all configurable parameters to the defaults set
at the factory including input/output definitions. The user is prompted again to make sure all
definitions really should be cleared.
Exit
This menu selection will take the user out of the configuration mode and reset the RTU to its
“online” mode.
FAIL SAFE SETUP
The fail-safe menu contains several items that determine how the RTUs behave under
abnormal conditions. In many installations, these features will not be needed, so they are
disabled by default.
Table 3. RTU Fail Safe Setup Menu
Menu Selections Range Factory Settings
{C}ommunication failure enable 0-10 0 (disabled)
Channel {U}se limits
Time period 0 to 30 minutes 0 (disabled)
# of reports 1 to 999 100
Time out interval 1 to 10 minutes 5 minutes
{E}nable exception reports enabled
{D}isable exception reports
E{X}it
Communication Failure Enable
Selecting this menu item allows you to set the number of times an exception report (power up
alarm, input change alarm, or output change alarm) is sent without acknowledgement from
its controller before the RTU enters the communications fail state.
The range is 1 to 10 times. Entering a “0” (the default value) disables communications failure
detection.
In the failed state, all outputs on the RTU will be turned off - digital outputs go in to the high
impedance state and analog outputs go to 0 volts. The outputs remain off even after commu-
nications are restored; they remain off until turned on again by a command from the
controller.