Specifications

Command Set 4-15
Read Low Alarm (RL)
The Read Low alarm command reads the value and type of the low alarm.
The alarm type can be either latching or momentary. A letter indicating the
alarm type, “L” for latching or “M” for momentary, will follow the alarm value.
For example:
Command: $1RL
Response: *+00000.00L
Command: #1RL
Response: *1RL+00000.00LEE
The RL command may be used to verify data loaded into the nonvolatile
memory with the LO command.
Read Pulse Transition (RPT)
The Read Pulse Transition command is used on the Timer and Frequency
input modules. The RPT command reads the direction of the edge used to
trigger the measurement cycle. The direction of the pulse transition is set by
the user using the Pulse Transition (PT) command. There are four possible
edge transitions: (+ to -), (- to +), (- to -), (+ to +). For example:
Command: $1RPT
Response: *+ -
Command: #1RPT
Response: *1RPT+ -A2
Remote Reset (RR)
The reset command allows the host to perform a program reset on the
module’s microprocessor. This may be necessary if the module’s internal
program is disrupted by static or other electrical disturbances. Once a reset
command is received, the module will recalibrate itself. The calibration
process takes approximately 3 seconds. For example:
Command: $1RR
Response: *
Command: #1RR
Response: *1RRFF
In general, the state of the digital outputs and the event counter will not be
affected by the RR command. However, if data in the microprocessor’s RAM
(Random Access Memory) has been lost, the RR command will result in a
full power-up reset.
Any commands sent to the module during the self-calibration sequence will
result in a NOT READY error.