Modifying program parameters via the buttons on the front panel

To modify specific parameters of the user program loaded in the controller via the buttons on the front panel, press the OK button when PARAMETERS is selected in the main menu.

To modify specific parameters of a function block, the number of the block and the parameters which can be modified must be known.

The block number (BXXX) can be found in the program edit or supervision window or on the printout.

The table below lists the names of the standard function block types used in the function bar with the corresponding abbreviations displayed on the front panel of the controller together with the list of parameters which can be modified by the buttons on the front panel for the standard functions. For application-specific functions, users should refer to the online help for each function, which can be accessed by clicking on "?" in the function block parameterisation window.

Name of standard function block type Abbreviated name on the front panel Parameters which can be modified via the buttons
Preset counter CNTR Counting setpoint
Duration of pulse
TIMER A/C T-AC Start-up time
Stop time
TIMER LI (cyclic timer) T-LI Run duration
Stop duration
Counting setpoint
Gain GAIN Y=(A/B)*X+C - Value of A
Y=(A/B)*X+C - Value of B
Y=(A/B)*X+C - Value of C
Upper limit
Lower limit
Preset hour counter HMTR Setpoint hour
Setpoint minute
TIMER B/H T-HB Duration of pulse
Numerical constant Ct Value of the constant
Daily, weekly and yearly time programmer TPRG All the parameters of each event but without
the possibility of adding or deleting an event.
For more detailed information, click here

Important note: Caution: If the OK button is pressed after a parameter value has been modified, the controller will write to its permanent memory (FLASH). This can distort the cycle time considerably, thereby corrupting processes based on the program execution cycle time (real time, filtered analog or digital inputs, etc.).

To view the first parameter which can be modified in a function block, select the block number, modify it and confirm with OK. The first parameter which can be modified in this block will appear. Once this stage has been completed, several types of display are possible:

  1. No parameters

The message "No parameters" indicates that there are no parameters which can be modified via the buttons on the front panel for this function block.

The 1st line of text gives the number of the function block and the abbreviated name of the function type.

Lines 2 and 3 contain the name of the parameter to be modified. If there are several parameters, each can be selected as shown by clicking here.

The last line is used to modify the parameter itself.

The 1st line of text gives the number of the function block and the abbreviated name of the function type.

The start of the 2nd line contains the number of the event currently being modified (after the letter T).

The 3rd and 4th lines contain the parameters which can be modified by the user. These will differ depending on the type of event (yearly, monthly, daily). To find out which method should be applied to access and modify the various parameters: click here.

In simulation and monitoring modes, the type of event can neither be modified via the buttons on the front panel of the controller nor via the parameterisation windows.

In the event of a periodic event, 2 fields require a specific comment:

S 12345 indicates the active weeks of the month, 1 for the 1st week, 2 for the 2nd week, etc. A dash – indicates that the week is not active.

DAY MTWTFSS indicates the days of the week, where M = Monday, T = Tuesday, etc. A dash – indicates that the day is not active.

Example: The combination 1-3-5 and M-----S activates the event on the first Monday and Sunday of each month, the third Monday and Sunday of each month and the fifth Monday and Sunday of each month (if these exist).

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