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(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
No Function
Stops output (i.e., inactive condition)
Pulse Output
Pulse output
Alarm Output
Output upon alarm
Warning Output
Output upon warning
Total Switch
Totalization switch output
H/L Alarm
H/L alarm output
Fwd/Rev Rngs
Forward/reverse flow rate
measurement
Auto 2 Rngs
Automatic 2 ranges switching
[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."
Condition of DO terminal
Selected function
Open (Off)
Pulse Output
Open (Off) when
(Read Example 1)
pulses are output.
Alarm Output
Good (normal)
(Read Example 2)
Warning Output
Good (normal)
Total Switch
Below setting value Equal or above
(Read Example 3)
H/L Alarm
Normal
Fwd/Rev Rngs
Forward direction
Note: For "Auto 2 Rngs" read 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]
Function
setting
Closed (On)
Pulse output condition (1 ms)
Active
Pulse disable condition
Open (Off)
Pulse output condition (1 ms)
Active
Pulse disable condition
Function
As no function is set, there is no output.
Pulse output is carried out.
Read Alarms (Section 6.5).
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.
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.
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.
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.
Closed (On)
Closed (On) when
pulses are output.
Alarm status
Warning status
setting value
H/L alarm status
Reverse direction
DO status
output
Closed
Open
Open
Closed
<6. PARAMETER DESCRIPTION>
Description
Example 2: When the "Alarm Output" function is
selected for the DO terminal, the following
signals are output from the terminal.
[F11]
Function
setting
Closed (On)
Alarm (Alarm status)
Active
Good (Normal)
Open (Off)
Alarm (Alarm status)
Active
Good (Normal)
Example 3: When the "Total Switch" function is
selected for the DO terminal, the following
signals are output from the terminal.
[F11]
Function
setting
Closed (On)
Equal or above setting value
Active
Below setting value
Open (Off)
Equal or above setting value
Active
Below setting value
6-25
DO status
output
Closed
Open
Open
Closed
DO status
output
Closed
Open
Open
Closed
IM 01E30D01-01EN
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