<6. PARAMETER DESCRIPTION>
6-25
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
Read 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
(Read Example 1)
Open (Off) when
pulses are output.
Closed (On) when
pulses are output.
Alarm Output
(Read Example 2)
Good (normal)
Alarm status
Warning Output
Good (normal)
Warning status
Total Switch
(Read 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” 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]
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
