LSIS XBF-AH04A - Page 570

Chapter 15 PID Function (Built-in function)
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5) _PID_REM_RUN (PID remote operation setting)
X
GB series built-in PID function can be started by both run from command’s start junction and
remote run bit setting. That is, XGB starts PID control if PIDRUN command’s start junction is on
or remote run setting bit is on. Namely, if one of them is on, it executed PID control.
6) _PID_PWM_EN (PWM output enable)
I
It determines whether to output the MV of PID control of ‘n’th loop as PWM output. For more
information about PWM output, refer to 15.2.3 PID control parameter setting. If the bit is off, it is
disabled; if on, it is enabled.
7) _PID_STD (PID RUN status indication)
I
It indicates the PID control RUN status of ‘n’ th loop. If a loop is running or paused, it is on while
if it stops or has an error during RUN, it is off. In the area as monitoring area, it is changed to
the current run status by PLC although a user enters any value temporarily.
8) _PID_ALARM (PID Warning occurrence)
I
It indicates warning if any warning occurs during PID control of ‘n’th loop. Once a warning
occurs during PID control operation of a loop, it is on while if it is normal, it is off. At the moment,
despite of warning, PID control continues without interruption, but it is desirable to check
warning information and take a proper measure. Once a warning occurs, the warning code is
also indicated in warning code area of a loop. For more information about the types of warning
codes and measures, refer to 15.5. In the area as monitoring area, it is changed to the current
run status by PLC although a user enters any value temporarily.
9) _PID_ERROR (PID Error occurrence)
I
If an error that discontinues running during PID control of ‘n’ th loop occurs, it indicates the
error’s occurrence. If an error generates warning, it is on; if normal, it is off. When an error
occurs, PID control stops and MV is output as the min. output set in parameter. Also, if an error
Flag name
Address
IEC type
address
Unit
Setting
_PID_REM_RUN
(PID remote run setting)
K1204n
%KX19264 + n
BIT
Available
Flag name
Address
IEC type
address
Unit
Setting
_PID_PWM_EN
(PWM output enable)
K1208n
%KX19328 + n
BIT
Available
Flag name
Address
IEC type
address
Unit
Setting
_PID_STD
(PID RUN status indication)
K1209n
%KX19344 + n
BIT
Unavailable
Flag name
Address
IEC type
address
Unit
Setting
_PID_ALARM
(PID Warning occurrence)
K1210n
%KX19360 + n
BIT
Unavailable
Flag name
Address
IEC type
address
Unit
Setting
_PID_ERROR
(PID error occurrence)
K1211n
%KX19376 + n
BIT
Unavailable