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Quick Reference
Appendix E
E-25
Control W ord 02 Bit Descriptions: Status and SIgn Bits
00 - K
I
x10 (Set by User)
Do not move decimal = 0
Move decimal to right = 1
01 - K
P
/10 (Set by User)
Do not move decimal = 0
Move decimal = 1
02 - Feedforward/Bias Sign (Set by User)
Pos = 0
Neg = 1
03 - Maximum Scaling Sign (Set by User)
Pos = 0
Neg = 1
04 - Minimum Scaling Sign (Set by User)
Pos = 0
Neg = 1
05 - Set Point Sign (Set by User)
Pos = 0
Neg = 1
06 - Process Variable Sign (Set by Instruction)
Pos = 0
Neg = 1
1
07 - Error Sign (Set by Instruction)
Pos = 0
Neg = 1
1
10 - Resume Control From Last State
Disabled - on first scan, a new CO is calculated
Enabled = on first scan, the accumulated integral value is
backcalculated from the last CO value
2
11 - Bumpless Transfer With Proportional Controllers
0 = no adjustment to Bias
1 = bumpless manual to auto mode by adjusting Bias
3
Do not change these vales. They are set by the PID function.
This
bit should only be set after the PID program has been run to obtain a valid last CO value
Do not change while the processor is operating.
1
2
3