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Home >> Mercedes Benz >> 2021 >> Metris Van Cargo >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments (04 Of 11) -- 447 Chassis >> Basic Knowledge >> PSM Arithmetic, Comparison Block Function - GF54.21-S-3158TRA

PSM Arithmetic, Comparison Block Function - GF54.21-S-3158TRA

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) 

G16501307Courtesy of MERCEDES-BENZ USA

Parameterizable special module (PSM) arithmetic, comparison block, function 

Result (E) = Input (c), if the configured comparison with input (a) and input (b) is "true". Otherwise, result (E) = result (d).

IMPORTANT Signal identification number = Signal ID.

CODING

Designation in data entry table Data entry bit width Meaning
AU_Compare_1_1 "Unsigned" 16 bit Signal ID of signal for input (a)
AU_Compare_1_2 "Unsigned" 16 bit Signal ID for input (b)
AU_Compare_1_3 "Unsigned" 16 bit Signal ID for input (c)
AU_Compare_1_4 "Unsigned" 16 bit Signal ID for input (d)
AU_Comp_1_Cfg "Unsigned" 8 bit Configuration of operator type:
"0" → a > b
"1" → a ≥ b
"2" → a = b
OUTPUT

Designation in signal ID list Data bit width Meaning
Out_AU_Compare_1 "Signed" 32 bit Result (E) of comparison

The same applies for other comparison blocks with 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