OPERATION
Output Operation:
Each of 10 outputs on the RD-10 can be individually commanded to turn on or off from a remote location. The
outputs can be commanded manually from a variety of remote control devices, including:
•a field radio with a DTMF keypad
•a Midian RD-1 or RD-10
•a Midian RC-10
The state of each output can be individually programmed to be on, off or assume the last known state when
power is applied, in the event of power failure. The operation of the output can be programmed to be Latched,
Momentary, or produce a Repetitive On-Off-On-Off pattern.
In Latched mode, the output assumes the necessary state (i.e., on or off) and will remain in that state until
commanded otherwise. If power is removed and re-applied, the output will assume a pre-programmed power up
state (which can be set to on, off or last) until commanded to another state.
In Momentary mode, the output assumes the on state for a specified duration of time and then turns off. The
duration can be programmed from 1 to 86400 seconds (24 hours). The momentary output pulse will be produced
each time a turn on command is received from the controlling unit. If the output receives another command to
turn on while the actual state of the output is still on, the on time will be reset. The RD-10 can be programmed to
report the actual output state as opposed to the internal output state. The RD-10 can also be programmed to
produce true momentary action when the commanding unit is an RC-10.
In Repetitive operation, both the on and off times can be programmed from 1 to 86400 seconds (24 hours). The
on-off-on-off pattern begins when the output is commanded to turn on. The pattern will repeat until a turn off
command is received. If a turn on command is received when the pattern is running, the unit will reset to the
beginning of the on time period and turn the output on regardless of the state of the output before the turn on
command was received. The RD-10 can also be programmed to report the actual state of the output as opposed
to the internal state.
Input Operation
The RD-10 has 10 digital inputs with debounce timers that can be programmed from 0 to 9.9 seconds in 100ms
increments. The shorter time periods can be used to debounce electrical contacts, switches and other short time
constant devices. The longer time periods can be used to debounce mechanical devices with longer time
constants such as a level switch in a liquid holding tank.
The debounced state (On/Off) of the inputs on the RD-10 can be queried when the unit is manually controlled
from a hand held or mobile radio. If the RD-10 is controlled from another RD unit, a change in a debounced input
can generate a report to the controlling unit. The input state changes that cause an I/O Status Report are
selected in the Remote Programmer software.
If the RD-10 is controlled from an RC-10, a change in the state of a debounced input can generate a report to the
RC-10. As above, the input state changes that are selected in the Remote Programmer software cause an I/O
Status Report to be generated. Additionally, the change in state can be considered an Alarm condition and
reported to the RC-10 as such. The input state changes that are considered an Alarm condition can also be
programmed by selecting the desired Alarm Condition in the Remote Programmer software. In order for an Alarm
to be reported, both the I/O Status Report column and the Alarm Condition column must be checked next to the
desired condition.
When the corresponding output is commanded to turn on or off, the event timer is reset. When the event time
expires, the debounced input is sampled and an Event Alarm can be generated. What conditions determine if the
Alarm is sent are programmable using the Event Alarm Condition column. An event timeout is always an Alarm
condition and is always reported if the sampled input state is designated as an Event Alarm Condition.
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