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PSM Arithmetic, Calculation Block Function - GF54.21-S-3155TRA

Model 447 

With Code ED5 (Parameterisable special module) 

Except Code XM7 (MOPF II) 

Model 448 

With Code ED5 (Parameterisable special module) 

Except Code XM7 (MOPF II) 

G16501304Courtesy of MERCEDES-BENZ USA

Parameterizable special module (PSM) arithmetic, calculation block, function, general 

Result (E) = (input (m1 )/input (m2 )) * input (a) ± input (b)

If divided by "0", then the output error (Er) = "1". The result (E) is invalid and is set to "0".

Result (E) > Upper limit (Lim. High) → Result (E) = Upper limit (Lim. High)

Result (E) < Lower limit (Lim. Low) → Result (E) = Lower limit (Lim. Low)

IMPORTANT Signal identification number = Signal ID.

CODING

Designation in data entry table Data entry bit width Meaning
AU_Calc_1_1 16 bit Signal ID for input a
AU_Calc_1_2 16 bit Signal ID for input m1
AU_Calc_1_3 16 bit Signal ID for input m2
AU_Calc_1_4 16 bit Signal ID for input b
AU_Calc_1_Lim_High "Signed" 32 bit Upper limit (Lim. High) for the result (E)
AU_Calc_1_Lim_Low "Signed" 32 bit Lower limit (Lim. Low) for the result (E)
AU_Calc_1_Cfg 8 bit Assignment to calculation steps 1 to 4 and selection of the operator (±)
OUTPUTS

Designation in signal ID list Data bit width Meaning
Out_AU_Calc_1 "Signed" 32 bit Calculation block output
Out_AU_Calc_1_Err 1 bit Calculation block error status output

The same applies for the other calculation blocks making allowance for the naming convention:

  Parameterizable special module (PSM) control unit component description   GF54.21-S-5005TRA 
  Overview of system components for parameterizable special module (PSM)   GF54.21-S-9998TRA