Yokogawa ADMAG AXR - Manual (Page 73)

<6. PARAMETER DESCRIPTION>
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IM 01E30D01-01EN
(5) Menu F: Status Function Setting items
Menu F contains setting items relevant to status Output functions.
[F10: DO Function] Setting of the function for the DO output terminal
This parameter sets the function for the DO (digital output) terminal.
Setting Function Description
No Function Stops output (i.e., inactive condition) As no function is set, there is no output.
Pulse Output Pulse output Pulse output is carried out.
Alarm Output Output upon alarm Refer to Alarms (Section 6.5).
Warning Output Output upon warning
Total Switch Totalization switch output Status output is carried out when the forward internal totalized value
reaches or exceeds the totalization switch value. The totalization switch
value is determined using D23: Ttl Switch Lower and D24: Ttl Switch
Upper.
H/L Alarm H/L alarm output Status output is carried out when the instantaneous flow rate equals or
falls below the low flow rate limit (L), or when it equals or exceeds the
high flow rate limit (H). These limit values are determined using G10: Low
Alarm and G11: High Alarm.
Fwd/Rev Rngs Forward/reverse flow rate
measurement
When flow is in the reverse direction, switching to the reverse range is
carried out automatically, measurement is performed, and status output is
carried out.
Auto 2 Rngs Automatic 2 ranges switching This function ensures that when the instantaneous flow rate exceeds
100% of the range, transition to the next range is carried out automatically.
Status output is carried out upon range switching.
Example 2: When the “Alarm Output” function is
selected for the DO terminal, the following
signals are output from the terminal.
[F11]
setting
Function
DO status
output
Closed (On)
Active
Alarm (Alarm status) Closed
Good (Normal) Open
Open (Off)
Active
Alarm (Alarm status) Open
Good (Normal) Closed
Example 3: When the “Total Switch” function is
selected for the DO terminal, the following
signals are output from the terminal.
[F11]
setting
Function
DO status
output
Closed (On)
Active
Equal or above setting value Closed
Below setting value Open
Open (Off)
Active
Equal or above setting value Open
Below setting value Closed
[F11: DO Active Mode] Setting of the active mode
for DO terminal
Operations are performed in accordance with the
following table when the active mode has been
set to “Closed (On) Act” using this parameter.
Operating patterns are reversed when the active
mode has been set to “Open (Off) Act.”
Selected function
Condition of DO terminal
Open (Off) Closed (On)
Pulse Output
(see Example 1)
Open (Off) when
pulses are output.
Closed (On) when
pulses are output.
Alarm Output
(see Example 2)
Good (normal) Alarm status
Warning Output Good (normal) Warning status
Total Switch
(see Example 3)
Below setting value Equal or above
setting value
H/L Alarm Normal H/L alarm status
Fwd/Rev Rngs Forward direction Reverse direction
Note: For “Auto 2 Rngs” see the Multiple ranges setting
section.
Example 1: When the “Pulse Output” function is
selected for the DO terminal and the
E12: Pulse Width is “1 ms”, the following
signals are output from the terminal.
[F11]
setting
Function
DO status
output
Closed (On)
Active
Pulse output condition (1 ms) Closed
Pulse disable condition Open
Open (Off)
Active
Pulse output condition (1 ms) Open
Pulse disable condition Closed