31.5.6.7 Synchronize
Output - High Speed Counter (Single-phase Settings, LT Series)
Synchronize output is output that turns ON when the current
counter value exceeds the ON preset value and turns OFF when the
counter value exceeds the OFF preset value. Since the synchronize
output changes the output state only at the point when the current
counter value exceeds the ON preset value or when the counter value
exceeds the OFF preset value, the synchronize output saves the
state even when you change the counter value using operations such
as clear preload and counter value. If you turn OFF the synchronize
output enable/disable flag while synchronizing output, the
synchronize output turns OFF. However, the output does not turn ON
if you turn ON the synchronize output enable/disable flag while in
that state (even when the state satisfies the conditions for
turning on synchronize output).
Summary
In GP-Pro EX, you can set up the initial value for each
parameter. After the system is running, you can change parameters
with system variables.
The procedure for setting the synchronize output is summarized
below.
Setting Up Initial Values
Refer to the setup procedures for GP-Pro EX
Changing After System is Running
-
Set the ON preset value and the OFF preset
value.
-
Set the parameter under [Request Special I/O
Parameter change].
-
Under [Special I/O Parameter Change Completed],
acknowledge that the parameter has been changed.
-
Enable the synchronize output under [Control
Special I/O].
-
See "Special I/O state" for acknowledgment.
-
The [Request Special I/O Parameter Change]
and [Special I/O Parameter Change Completed] operations reflect all
the CH parameters you change.
-
You cannot define 65535 or 65536 for the ON
Preset Value or OFF Preset Value. (Values with the bottom 16 bits
in the ON Preset Value or OFF Preset Value of xxxxFFFFh or
xxxx0000h cannot be specified.)
-
Right after transferring, operations use
parameter values set up in GP-Pro EX. Any restarts, which include
going off-line, reset, and turning power OFF, use stored system
variables as parameters.
Preset value settings
To set the ON preset value and the OFF preset value, change the
parameter under "Request special I/O parameter change" in the
system variable (#L_ExIOSpParmChg).
Then, acknowledge the completion under [Special I/O parameter
change completed]. Depending on the CH where you allocate the
high-speed counter, the request flag and completion flag will have
different bit positions.
-
Specify the ON preset value and the OFF preset
value using GP-Pro EX or the system variable.
For GP-Pro EX
In [System Settings], select [I/O Driver] and select the "Match"
check box on the [Internal Driver 1] screen and click [High Speed
Counter Settings].
In the [High Speed Counter Settings] dialog box, begin set up
from [Synchronize Output].
For the system variable
Select the value from the ON preset (#L_HSC*_ONP) and the OFF
preset (#L_HSC*_OFP).
-
To specify the value from the system variable,
change the parameter under [Request Special I/O Parameter
Change].
#L_ExIOSpParmChg
Request Special I/O Parameter Change
This variable uses the CH specified in the I/O driver settings
as the 4-bit configuration information to request the special I/O
parameter change.
a: CH1 special I/O parameter change
request
c: CH2 special I/O parameter change request
e: CH3 special I/O parameter change request
g: CH4 special I/O parameter change request
You can also read the previous settings using the Operation bits
below.
b: CH1 special I/O parameter read request
d: CH2 special I/O parameter read request
f: CH3 special I/O parameter read request
h: CH4 special I/O parameter read request
-
Acknowledge the completion in [Special I/O
Parameter Change Completed]. Regarding the details of the variable,
the watch bit will differ, depending on the CH to which you
allocate the high-speed counter, as shown below.
Special I/O parameter change completed
a: CH1 special I/O parameter change
complete
c: CH2 special I/O parameter change complete
e: CH3 special I/O parameter change complete
g: CH4 special I/O parameter change complete
You can also read the previous settings using the watch bits
below.
b: CH1 special I/O parameter read
complete
d: CH2 special I/O parameter read complete
f: CH3 special I/O parameter read complete
h: CH4 special I/O parameter read complete
-
The figure below shows the flag timing chart for
the special I/O parameter change request and completion.
1) Set the ON preset value and the OFF preset value.
2) Turn on request flag for the special I/O parameter change to
change the parameter to the set value.
3) Once the parameter is changed, the completion flag turns ON.
4) Acknowledge that the completion flag is ON and turn the request
flag OFF.
5) When the request flag is recognized as OFF, the completion flag
turns OFF.
Preset value error status
It shows any error status in the ON preset value and the OFF
preset value during the synchronize output. If the system variable
(#L_IOStatus[1]) shows the error code 100, you can acknowledge the
error status from the system variable (#L_ExIOSpParmErr) value. The
watch bit will differ, depending on the CH to which you allocate
the high-speed counter.
-
When changing Special I/O parameters, and
the preset value is invalid, operations continue by using
parameters set up to that point.
However, since an invalid value is stored in the system, make sure
you change it to a valid value.
If you restart the LT with invalid values (go off-line, reset, or
turn the power OFF), operations will use initial parameter values
set up in GP-Pro EX.
#L_ExIOSpParmErr
|
a: CH1 counter preset value
error
|
[1]: Preset value error
[0]: Normal
|
|
b: CH2 counter preset value
error
|
[1]: Preset value error
[0]: Normal
|
|
c: CH3 counter preset value
error
|
[1]: Preset value error
[0]: Normal
|
|
d: CH4 counter preset value
error
|
[1]: Preset value error
[0]: Normal
|
|
e: Counter input control error
|
[1}: Preset value control error
(bottom 16 bits in preset value is FFFFh or 0000h)
[0]: Normal
|
Synchronize output control
Use this function to enable or disable the synchronize output.
Turn on the synchronize output flag under the CH special I/O
control in the system variable (#L_ExIOSpCtrl) to enable and turn
the flag off to disable the output. The Operation bit will differ
depending on the CH to which you allocate the high-speed
counter.
#L_ExIOSpCtrl
Turn on the 1st bit of the CH to enable and turn it off to
disable the output.
Synchronize output status
This function shows whether the synchronize output is enabled or
disabled. You can acknowledge the enable/disable status of the
synchronize output with the synchronize output flag under the CH
special I/O state in the system variable (#L_ExIOSpCtrl). If the
flag is ON, the output is enabled. If it is OFF, the output is
disabled. The watch bit will differ, depending on the CH to which
you allocate the high-speed counter.
#L_ExIOSpCtrl
If the 1st bit of the CH is 1, the synchronize output is
enabled. If it is 0, the output is disabled.
Output clear feature during the synchronize
output
Use this function to turn OFF the output during the synchronize
output. You can also acknowledge the synchronize output being
cleared.
You can use the synchronize output clear feature whether the
counter is ON of OFF. Turn On the synchronize output clear flag
under the CH counter input control request in the system variable
(#L_ExIOCntInCtrl) to turn OFF the synchronize output. The
Operation bit will differ depending on the CH to which you allocate
the high-speed counter.
#L_ExIOCntInCtrl
Counter input control request
Turn ON the 1st bit of the CH to turn OFF the output.
The following figure shows the flag timing chart for the
synchronize output and the synchronize output clear.
Counter input control response
If the 1st bit of the CH is 1, the synchronize output has been
cleared.
Synchronize output terminal status
You can acknowledge the synchronize output status in the output
terminal with the system variable (#L_ExIOSpOut). The watch bit
will differ, depending on the CH to which you allocate the
high-speed counter.
#L_ExIOSpOut
|
a: CH1 output state
|
[1]: Output, [0]: Not output
|
|
b: CH2 output state
|
[1]: Output, [0]: Not output
|
|
c: CH3 output state
|
[1]: Output, [0]: Not output
|
|
d: CH4 output state
|
[1]: Output, [0]: Not output
|
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