Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 172)

Application Example 1, Continuous Block
Transfer
Appendix B
BĆ13
Table B.C
Recommended Output Annunicators
DESCRIPTION FUNCTION
BLOCK TRANSFER
WATCHDOG Indicators
Program Address
012/01ĆREAD
012/00ĆWRITE
These indicators illuminate if a read or write block transfer does not occur within
a predetermined time. The time is determined by the preset value selected for
timer instructions 043
8
or 044
8
will timeĆout and energize indicators 012/02 or
012/00 depending upon whether the read or write function failed (rungs 9 and
25)
MANUAL MODE
Indicator
Program Address
012/04
This indicator illuminates when the manual control station (if used) is in the
manual mode (rung 18).
MODULE NOT
INITIALIZED
Indicator
Program Address
012/03
This indicator illuminates when the module has just been powered and is waiting
for operating parameters from the processor. The indicator turns off after the
first successful load/enter sequence (rung 11).
Specific Example
Once the program has been written, specific data of the dynamic block
and loop block can be entered into the respective data table files. This can
be done using the data monitor display mode of the industrial terminal.
Place the cursor on the file-to-file move instruction in rung 1 and press the
(DISPLAY)(1) Keys on the industrial terminal keyboard. The
hexadecimal display of the dynamic block and loop blocks will appear on
the screen. Enter the selected standard and expanded feature values.
On-line data change (SEARS)(5)(1) can be used.
The features and values that have been selected for this example problem
are tabulated below according to the control word in which the features
are programmed.
Master Control Word W01
Bits 17, 16 = 1 Both identifier bits must be 1.
Bit 15 = 1 Loop 1 only is selected.
Bit 14 = 0 Expanded features are not used.
Bit 13 = 0 Calibration bit must be 0.
Bit 12 = 0 Format is BCD.
Bit 11 = 0 Setpoint format is BCD.
Bit 10 = 0 Soft fault is programmed for manual
reset.