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AX34209a_e.doc / Mrz-16 

 

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8.

 

Special Functions 

8.1.

 

Tare / Offset function 

This function will become active after the “Cmd” parameter has been set to “oFFSEt”  or to 
“both”(see 6.1). As a result, every touch of the “Cmd” key will store the actual display value to 
the Offset register, resulting in a Zero display with the actual input signal. 

8.2.

 

Linearization 

This function allows converting non-linear input signals into a linear presentation or vice-versa. 
There are 16 interpolation points available, which can be freely arranged over the whole 
measuring range in any distance. Between two points the unit automatically will interpolate 
straight lines.  

 

For this reason it is advisable to set many points into areas with strong bending, and to use 
only a few points in areas with little bending. „Linearization Mode“ has to be set to either „1-
quA“ or „4-quA“ to enable the linearization function (see subsequent drawing). This will change 
the linear measuring results into a non-linear display. 

 

Parameters P01_x to P16_x select 16 x- coordinates, representing the display values which the 
unit would normally show in the display. With parameters P01_y to P16_y you can specify now, 
which values you would like to display instead of the corresponding _x values. 

 

This means e.g. that the unit will replace the previous P02_x value by the new P02_y value. 
 

 

 

 

 

With respect to the consistency of the linearization, the x- registers have to use continuously 
increasing values, e.g. the x- registers must conform to the constraint  
P01_X <  P02_X < … <  P15_X < P16_X.  

 

 

Independent of the selected linearization mode, the possible setting range of all registers  
P01_x, P01_y,…, P16_x, P16_y is always  -99999 … 99999. 

 

 

For measuring values lower than P01_x, the linearization result will always be P01_y. 

 

 

For measuring values higher than P16_x, the linearization result will always be P16_y. 

 

 

With operation modes “Single” and Dual”, all linearization refers to input channel A only. 

 

 

 

With all combined operation modes, linearization refers to the calculated final result of the 
selected combination.

 

 

 

Summary of Contents for AX 342

Page 1: ...wo analogue inputs with independent scaling each 10V or 0 4 20 mA Operating modes for display of input A or input B or the combinations A B A B A x B and A B Useful supplementary functions like Tare f...

Page 2: ...d application specific safety standards When this unit is used with applications where failure or mal operation could cause damage to a machine or hazard to the operating staff it is indispensable to...

Page 3: ...Keypad 12 5 The Parameter Menu 13 5 1 Overview of Basic Parameters 13 5 2 Overview of Operational Parameters 14 6 Setting of Parameters 15 6 1 Basic Parameters 15 6 2 Operational parameters 16 6 3 Mod...

Page 4: ...separate analogue inputs for use with single or combined operation Also it may be important to display and evaluate both linear and non linear analogue inputs at an acceptable accuracy which requires...

Page 5: ...and wiring example GND 17 30VCD IN 1 2 3 4 5 6 7 8 9 10 Input A 24VDC OUT TXD B RXD A GND GND 1 2 3 1 2 3 X1 X2 X3 C NO NC C NO NC Rel 1 Rel 2 GND analogue Input B Rel 2 Rel 1 TxD RxD GND A B C NC NO...

Page 6: ...nal 7 provides an auxiliary output of 24 V DC 100 mA max for supply of sensors and encoders This voltage is independent from the level of the input voltage 2 3 Analogue measuring inputs There are two...

Page 7: ...oard to the rear to remove the PCB from the housing ON DIL Switch Removal of the back plane Location of the DIL switch Never set DIL switch positions 1 and 2 or DIL switch positions 3 and 4 to ON at t...

Page 8: ...ct the rear screw terminal strips remove the back plane from the unit and pull the PCB out of the housing jumper insered screw terminal strip locking tab factory preset A current B current A voltage B...

Page 9: ...DC by use of a remote resistance in series to the input line please observe applicable safety standards You can calculate the value from the formula Rx k 3 x Vx V 30 R resistance value V input voltage...

Page 10: ...y state Setup state a Basic setup b Operational parameter setup Teach operation 4 1 Normal display state You can change over to the other states while the unit is in the normal display state only Chan...

Page 11: ...will be highlighted blink This procedure allows setting all digits to the desired values After the most significant digit has been set the low order digit will blink again and you can do corrections...

Page 12: ...to the factory default values The factory default settings are shown in the parameter listings in section 6 When you decide to set all parameters to default please be aware that all previous settings...

Page 13: ...exts are very limited with a 7 segment display this method has proved to be most suitable for simplification of the programming procedure The subsequent table is to show the general structure of the w...

Page 14: ...g StArtA StArtA StArtA End A End A End A dPoi A dPoi A dPoi A FiLt A FiLt A FiLt A OFFS A OFFS A inPutb inPutb StArtb StArtb End b End b dPoi b dPoi b FiLt b FiLt b OFFS b n FAc d FAc P FAc dPoint Int...

Page 15: ...al operation input A input B Dividing operation ratio A B Multiplying operation product A x B Brightness of the display 100 100 100 of maximum brightness 80 80 of maximum brightness 60 60 of maximum b...

Page 16: ...ecute the Teach function The Cmd key will execute both the Tare and the Teach function 6 2 Operational parameters After the basic setup you can access the operational parameters by pressing ENTER for...

Page 17: ...will display with a full scale input of 10 volts or 20 mA 99999 99999 1000 Decimal point for signal A Select the desired position of the decimal point 00000 0 000000 No decimal point 00000 0 one decim...

Page 18: ...a zero input signal of 0 volts or 0 4 mA 99999 99999 0 End value B Value which the unit will display with a full scale input of 10 volts or 20 mA 99999 99999 1000 Decimal point for signal B Select the...

Page 19: ...s with the Dual mode for individual display of inputs A and B The combined display will then be the result calculated from both single values The following additional parameters provide a final scalin...

Page 20: ...g characteristics Greater Equal Relay is statically active with display greater or equal Preset Lower Equal Relay is statically active with display lower or equal Preset Greater Equal Relay is dynamic...

Page 21: ...ble Hysteresis for relay 2 0 99999 0 Serves to generate an anticipation signal at a fixed distance to the preset 1 signal The anticipation automatically follows the settings of preset 1 6 4 2 Characte...

Page 22: ...imum value with setting LE and Preset 2 is used to monitor a maximum value with setting GE then output 1 will operate with an Automatic Startup Inhibit i e it will become enabled only after the measur...

Page 23: ...11 and 99 The address must however not contain a 0 because such numbers are reserved for collective addressing of several units 0 99 11 Serial Data Format The first character indicates the number of d...

Page 24: ...ransmissions are shown in the table Baud Rate Minimum Cycle Time ms 600 384 1200 192 2400 96 4800 48 9600 24 19200 12 38400 6 Serial Mode PC Operation according to communication profile see 6 5 3 Prin...

Page 25: ...0011 0001 0011 1010 0011 0001 0000 0101 With a correct request the unit will respond with the adjoining response string Leading zeros will be suppressed BCC provides a Block Check Character formed by...

Page 26: ...ed Carriage return X X X X X X LF CR Print2 Sign Data Carriage return X X X X X X CR The mode of activation of serial transmissions can be determined as follows Cyclic timed transmissions Set the Seri...

Page 27: ...e inputs scaling of the display Select combination and final scaling if applicable 6 3 1 and 6 3 2 6 3 3 Configuration of relay outputs 6 4 Configuration of the serial interface 6 5 4 Supplementary fu...

Page 28: ...l change the linear measuring results into a non linear display Parameters P01_x to P16_x select 16 x coordinates representing the display values which the unit would normally show in the display With...

Page 29: ...e signal is proportional to the filling level but not to the filling quantity P01_x P10_x P15_x P16_x Pressure Sensor 0 20 mA P01_x P10_x P16_x P01_y P07_y P15_y P16_y Pressure Volume P15_x P10_y To s...

Page 30: ...this the teach function is ready to start How to use the Teach Function Hold down the Cmd key for 3 seconds until the display shows tEACh Now you are in the Teach mode To exit the teach mode again you...

Page 31: ...ion point P02_x The unit will examine the constraint valid for the x values of interpolation points Every interpolation point must be higher than its preceding point Where this constraint is breached...

Page 32: ...of specified range Overflow the analogue input signal is greater than 10 2 V or 20 4 mA Underflow the analogue input signal is lower than 10 2 V or 0 4 mA Any out of range situation will cause a messa...

Page 33: ...ange Input B inPut B 0 2 1 11 Start Input B StArt B 99999 99999 0 12 End Input B End B 99999 99999 1000 13 Dec Point Input B dPoi B 0 5 0 15 Average Input B Filt B 0 4 0 14 Offset Input B OFFS B 99999...

Page 34: ...6 P4 y P04_Y 99999 99999 99999 A7 P5 x P05_H 99999 99999 99999 A8 P5 y P05_Y 99999 99999 99999 A9 P6 x P06_H 99999 99999 99999 B0 P6 y P06_Y 99999 99999 99999 B1 P7 x P07_H 99999 99999 99999 B2 P7 y P...

Page 35: ...AX34209a_e doc Mrz 16 Page 35 38 9 2 Dimensions 96 0 3 780 110 0 4 331 44 0 1 732 10 0 394 8 0 315 91 0 3 583 9 0 345 129 0 5 079 140 5 5 531 48 0 1 890 Panel cut out 91 2 x 44 8 mm 3 590 x 1 764...

Page 36: ...Relay outputs 2 relays dry change over each 250 VAC 1 A 250 VA or 100 VDC 1 A 100 W Serial interface RS 232 RS 485 600 selectable 38 400 bauds Ambient temperature Operation 0 45 32 113 F Storage 25 7...

Page 37: ...tch characteristics 1 Switch characteristics 2 Hysteresis 1 Hysteresis 2 Serial unit No Serial format Serial Baud Rate Analogue Inputs Input A Input B Input range Start value End value Decimal point F...

Page 38: ...16 Page 38 38 Linearization P01_X P01_Y P09_X P09_Y P02_X P02_Y P10_X P10_Y P03_X P03_Y P11_X P11_Y P04_X P04_Y P12_X P12_Y P05_X P05_Y P13_X P13_Y P06_X P06_Y P14_X P14_Y P07_X P07_Y P15_X P15_Y P08_...

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