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Unit Operations:

 

 
The work bits I0200.00 to I0200.15 control the mode of operation of the unit as follows: 

 
Work Bit 

       Function 

 

 

I0200.00   

 

Controls 

LED0 

             

 

 

 

 

 

 

 

 

 

   

 

I0200.01      Controls 

LED1  

I0200.02 &   
I0200.03      Not 

used 

I0200.04 to   
I0200.07 

 

    Reserved for future use 

I0200.08 &   

    00 : Screen mode 

01 : Register mode 

I0200.09 

 

    10 : Operator mode  11 : Invalid   

I0200.10 &   

    Timeout to screen mode from Operator mode 

I0200.11 

  

    00 : 10 seconds  

01 : 20 seconds 

 

 

 

  

    10 : 30 seconds    

11 : 40 seconds  

I0200.12 to   
I0200.14 

 

    Reserved for future use 

I0200.15 

 

    To disable data entry in Screen mode 

     

 

(ON 

Disable) 

 
From the above table, it is clear that the unit will display ASCII text (see section on 

Screens

 for 

more details on this ) if I0200.08 and I0200.09 are OFF.  To allow operators to view and edit the 
registers, I0200.09 is to be kept ON.  If I0200.09 is OFF, the unit will not display any registers and 
the function keys will only act as push buttons mapped to the corresponding bits from I0201.00.  
Refer to “Register Mode” for details.  If I0200.09 is ON, REG key press will allow an operator to 
view the registers.  The REG key will scroll through the available register types whereas the UP 
and DOWN arrow keys will scroll through the register/bit numbers. After timeout specified by bits 
10 and 11 and if no key is pressed, the unit will switch back to the Screen mode and display 
screens.  Thus Operator mode is a combination of Register as well as Screen modes.  

 

 

 

Summary of Contents for NT2S-SF123B-E -

Page 1: ...iting this document It is assumed that the user is well acquainted with the PLC being used and with Windows based software usage in general Hereafter in the manual NT2S SF123B E will be referred to as...

Page 2: ...I0201 00 to I0201 05 Every time a key is pressed the corresponding bit as shown in the table below is held on while the key is pressed The keys also have alternate functions Key Work Register mode fu...

Page 3: ...isplay ASCII text see section on Screens for more details on this if I0200 08 and I0200 09 are OFF To allow operators to view and edit the registers I0200 09 is to be kept ON If I0200 09 is OFF the un...

Page 4: ...DM0020 Hence there can be two methods of changing the screen to be displayed One is to keep the value in DM0020 constant and change the data in the screen registers in the ladder logic Second is to k...

Page 5: ...r pump is on To display this screen do the following a Move number 200 in DM0020 since the screen text will be stored in DM0200 onwards b Move character string Last Rinse Cycle into 8 words from DM020...

Page 6: ...ex Word ASCII Hex DM0200 La 4C61H DM0208 Wa 5761H DM0201 st 7374H DM0209 te 7465H DM0202 R 2052H DM0210 r 7220H DM0203 in 696EH DM0211 pu 7075H DM0204 se 7365H DM0212 mp 6D70H DM0205 C 2043H DM0213 i...

Page 7: ...s available in data word DM0100 and the oven status is given by bit I001 00 To display the above screen do the following a Move number 200 in DM0020 since the screen will be stored in DM0200 onwards b...

Page 8: ...nd DM0214 The NT2S C will read data in DM0003 and embed in xx x format g Move s into DM0215 This command completes the screen by appending the s to the bake time This will put the following data in th...

Page 9: ...key It is advisable to create a password screen which can block the usage of the register mode Bar Graph NT2S C uses DM0012 to DM0015 registers to hold bar graph values to be displayed If Offset regi...

Page 10: ...most applications involving simple digital controls are not used anyway and simply change the offset register to display different screens The user can fill the data memory using the data display edit...

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