Control-Related Commands - Emerson Micro Motion 3711 Configuration And Use Manual

Function Sequence Tables
Table 11-10 Time-related commands
Name Description
ST Start specified Timer with specified
number of 100-millisecond intervals.
CT Check Timer for specified FST.
WT Suspend FST execution until specified
number of seconds (ARG1) have
elapsed. The number of seconds can
be from 0.1 to 999,999.
(1)
DWK Sets RR(out) to the day of the week
(1=Sunday, 7=Saturday).
(1)
MND Sets RR(out) to the number of minutes
past midnight.
(1) Before using the DWK and MND functions, ensure that the real-time clock on the Model 3711 is set correctly.
11.8.5

Control-related commands

Use Analog Output (AO), Discrete Output (DO), and Timed Duration Output (TDO) control-related
commands to control outputs.
Table 11-11 Control-related commands
Name Description
AO Analog Output. Sets the EU value of
the specific Analog Output point to the
argument value.
DO Discrete Output. Sets the status of the
specified Discrete Output point to the
argument value.
TDO Timed Duration Output. Activates a DO
point configured as a TDO or TDO
Toggle. This command requires that
you write a value to the EU Value
parameter prior to TDO command.
(1) If the output is in manual mode, the command is not performed. This Manual Mode check allows the FST to continue operation while
the remote device is being serviced.
To control the immediate physical state of an output, use the appropriate output command (see
Table 11-11). Using the database command SAV to write a value to the EU parameter of an output
affects the value from which the output level is calculated, but does not change the output directly.
If a PID loop is controlling the Analog Output, placing the PID loop into Manual Mode allows the
FST to send a value to the output parameter of the PID.
Configuration and Use Manual
Arguments
• ARG1 = FST Point Database
Value
• ARG2 = Database or Constant
Value
• ARG1 = FST Point Database
Value
• ARG2 = LABEL
• ARG1 = Database or Constant
Value
None
None
Arguments
• ARG1 = AO Point Database
Value
(1)
• ARG2 = Database or Constant
Value
• ARG1 = DO Point Database
Value
• ARG2 = Database or Constant
Value
• ARG1 = DO Point Database
Value
Results
FST Timer (ARG1) = ARG2
• If FST Timer (ARG1) = 0,
continue to next command.
• Otherwise: go to ARG2.
Delay ARG1 seconds
RR(out) = Day of Week
RR(out) = Minutes
Results
AO Output(ARG1) = ARG2
DO Output(ARG1) = ARG2
DO Output(ARG1)
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