Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) PID and Ramp/Soak Functions - Manual (Page 23)

Continuous Control Functions
PID CONTROL BLOCK
2-17
15 Control Interval (CI) ...........................................................................................................CWR
The control interval is a millisecond time value that represents the number of milliseconds
between executions of a PID control algorithm within a block.
0 run PID algorithm at whatever rate block runs (determined by loop
rate).
Milliseconds run PID algorithm at multiple of block rate (value is rounded up to the
next highest task rate multiple). A slower PID algorithm will reduce
the total processing time required by a block. This allows other
commands to be performed without exceeding the block execution
time.
16 Setpoint Modes Allowed (SPMA) .................................................................................... C – R
The setpoint modes allowed is a bit mapped field with each bit specifying an allowed mode. If
remote is an allowed setpoint mode, a remote setpoint input (RSPI) must be configured. The
count values for the bit data and configurable modes are:
L 1 Local setpoint only allowed
R 2 Remote setpoint only allowed (remote setpoint input must be
configured)
L.R 3 Also R.L. Local or Remote setpoint modes allowed.
17 Setpoint Mode Status, Initial Value (SPMS)......................................................................CWR
The setpoint mode, initial value is the active setpoint mode. Local and Remote are
configurable. Track and Fault are not configurable or writeable. If a control mode is
configured, writes to the setpoint and control modes affect each other (see Control Mode).
LOCAL 0 Local setpoint value is used. If the setpoint mode is LOCAL, the
active setpoint remains at the last value obtained when the mode was
TRACK or REMOTE, or the value written from the user interface.
When the setpoint mode is LOCAL, the PID track status output is set
TRUE.
REMOTE 1 Remote setpoint value is used. When the setpoint mode is
REMOTE, the active setpoint is the remote setpoint value multiplied
by the ratio and added to the bias. A remote setpoint input must be
configured.
TRACK 3 This read only value indicates that setpoint track is enabled and the
output mode is TRACK or MANUAL and the setpoint TRACK value is
the active setpoint value.
FAULT 5 This read only value indicates that setpoint track is enabled and the
output is in a FAULT condition. All setpoint processing outputs are
set bad. Since the setpoint mode cannot be determined, it must be
cleared by writing a remote setpoint value or a manual output value.
18 Setpoint Mode Status Quality (SPMSQ) ......................................................................... – WR
The setpoint mode status quality is determined by the remote setpoint, bias or ratio qualities.
GOOD 0 Quality when the block is RUN or HOLD.
BAD 1 Quality when the block is OFF.