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The settings for the DCS control valves that I have recorded are as follows: 1. Settings for ordinary control valves: SH HH MH SL PH ML PV PL P SV LL I MV VL D DV DL GW SUM SVH DB OPHI SVL CK OPLO CB MSH PMV MSL 2. Self-protection mode: MODE=MAN, ALAM=ANS-, BSTS:NR, PV=2, MTM=4, MV=0, SIMM=0, BPSW=0 3. Special valves (plug valves, slide valves, double-acting slide valves, butterfly valves at the flue gas inlet): SSH MH SSL ML SV, GAIN, MV, BIAS, OPHI, RP, OPLO, PMV, MSH, MSL. Notes: PV: Measured value; SUM: Cumulative measured value; SV: Set value; MV: Output value; DV: Difference between set value and measured value; SH: Upper limit of the measured value range; SL: Lower limit of the measured value range; OPHI: Upper limit of the output valve position range; OPLO: Lower limit of the output valve position range; MSH: Alarm for upper limit of output valve position; MSL: Alarm for lower limit of output valve position; HH: High-high alarm for measured value; PH: High alarm for measured value; PL: Low alarm for measured value; LL: Very low alarm for measured value; MH: High alarm for output value; ML: Low alarm for measured value; DL: Alarm for difference between set value and measured value; P: Proportional gain; I: Integration time; D: Derivation time; AUT: Automatic mode; MAN: Manual mode; CAS: Cascade mode; NR: Circuit normal; IOP: Open circuit on input side; OOP: Open circuit on output side; CAL: Calibration of measured value. Question: What do GW, SVH, DB, SVL, CK, CB, PMV mean respectively? 2. Self-protection mode: MODE=MAN, ALAM=ANS-, BSTS:NR, PV=2, MTM=4, MV=0, SIMM=0, BPSW=0 3. Special valves (plug valves, slide valves, double-acting slide valves, butterfly valves at the flue gas inlet): MH, ML, GAIN, BIAS, RP, PMV – what is the meaning of each of these? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?