How To Use A Powerpoint 2.5 On A Computer With A Monitor On A Pc Or Macbook 2.2 (Powerpoint) On A Macbook (Powerstation) On An Ios 2.3 (Powerclock) On Pc

Transcription

1 SECTION 4 - MONITORING A PROGRAM INTRODUCTION The LADDER monitor utility serves two purposes: It observes the operation of an INFI 90 processor module as it runs a ladder program. The processor module actually runs a function block program which is translated from the ladder program. What appears on the screen is the ladder program with live data from the function block program in the processor module. It allows certain changes to be made to a program as it runs. Tunable parameters of function block rungs can be changed and contacts and coils of logic rungs can be forced. Press F1 at the main menu to start the monitor. If the system interface data and the file name have not been entered, the system prompts for them. Figure 4-1 shows the monitor opening screen. Figure 4-1. Monitor Opening Screen TPS0799A F1> Disp Tags Displays a list of all the tag names defined in the ladder program. F2> Select Rung Permits selecting a rung for monitoring. INTRODUCTION I-E96-705A1 4-1

2 F3> Prob Report Displays module problem reports. Refer to Table F-1 for descriptions of the problem reports. F4> Save File Saves changes made to the ladder program while in the monitor (by tuning or forcing) to the disk. Alt-F1> SGL/RDN Esc> New File Permits monitoring of the module status of a single module and a redundant module. Enables entry of a new ladder file name for monitoring. MONITORING LOGIC RUNGS Either DISP TAGS or SELECT RUNG can be used to select a rung for monitoring. Press F1 to display the tag list as shown in Figure 4-2. Select any rung by moving to the desired tag and pressing F1. The rung containing that tag appears on the screen. Once a rung is selected, a screen similar to Figure 4-3 appears. Figure 4-2. Tag List TPS0789A The value of each contact or coil is indicated in the space inside the symbol: dark equals zero, bright equals one. A contact represents a reference to an item of data (a coil or function block output) and, depending upon the type of coil, an operation to be performed on that item of data. If an input or output symbol is shown in reverse video (dark symbol on light background), the corresponding value is not MONITORING LOGIC RUNGS 4-2 I-E96-705A1

3 Figure 4-3. Example Monitor Rung Screen TPS0790A being read from the module. If all the values are reversed, it can mean that the processor module is not in execute mode. The monitor menu has a + character on the right side, indicating more menu items are available. To see the other menu items, press or +. Tab For logic rungs, the menu items function as follows: F2> Descriptor This changes the display so that each contact and the coil are replaced by their descriptions. A checkerboard pattern appears to help identify the grid positions. F1 returns to the logic rung display. F3> Comment This displays the comment area. F4> X-Reference This finds all the rungs that refer to the coil of the displayed rung (cross reference). After pressing F4, the menu shown in Figure 4-4 appears. The following keys can be used: F1 F2 Esc Displays the currently identified rung. Searches for the next rung that refers to the tag. It looks for the next rung each time is pressed. Terminates the cross reference search. F2 MONITORING LOGIC RUNGS I-E96-705A1 4-3

4 F5> Force This substitutes a constant value in place of the normal dynamic value of a contact or a coil. 1. Press F5 to enter the force mode. The screen now appears as shown in Figure 4-5. Initially the cursor points to the coil. Figure 4-4. X-Reference Screen TPS0791A Figure 4-5. Force Screen TPS0792A MONITORING LOGIC RUNGS 4-4 I-E96-705A1

5 2. Move the cursor using the cursor control keys. The function keys now perform the following operations: F2 F3 Forces the contact or coil closed (value = 1) and highlights the inside of the contact or coil. Forces the contact or coil open (value = 0) and unhighlights the inside of the contact or coil. F4 F1 Holds the coil at the current value. to a coil. Returns to normal. F4 applies only NOTE: The tag name associated with the contact of coil appears bright when a force or hold condition is in effect. 3. Press to leave the force mode. Esc F6> Disp Mark This function displays the list of marked rungs. The list is arranged in a grid. The display shows only a 2 5 portion of the list. The entire list may be viewed by scrolling the display using any of the following keys: The four cursor keys,,,,, -, and -. Page Up Page Dn Home End Ctrl Ctrl F7> Prev Rung Displays the previous rung. F8> Next Rung Displays the next rung. F9> New Rung Selects any rung for display. Specify the rung by its rung number, one of its output tags, or its block number (block number preceded by #, e.g., #501). F10> Lists Refer to LISTS in this section. M> Rung and G> Go To Mark T> Trace Input and 0> Trace Out The mark command (M) allows up to 100 rungs to be marked for easy recall using go to mark ( G). These two commands provide a convenient method of tracing the flow of data into a rung. T steps from the current rung to any one of its inputs. Successive use of the T command traces out one particular path of data into the rung. Once a trace path has been established with the T command, the O command allows a trace back (i.e., output to input) along the path one step at a time. To use the command, display a rung, press T, then follow the screen prompts. MONITORING FUNCTION BLOCK RUNGS As with the logic rung, the status (good or bad) of an input or output is indicated by the normal or reverse video attribute of the input or output symbol. Normal video indicates that the MONITORING FUNCTION BLOCK RUNGS I-E96-705A1 4-5

6 status is good (i.e., the value is being read from the processor module). Reverse video indicates that the status is bad (i.e., the value is not being read from the module). The value of an input or output is indicated in the space inside the symbol. Boolean input and output values are indicated in the same way as contacts and coils: Dark indicates zero and light indicates one. For inputs and outputs with data type real, the numeric value of the input or output is displayed inside the symbol. On each function block rung there are two more or end indicators on the display, one highlighted and one normal. The highlighted one indicates which side may be scrolled up or down (use and or Page Up and Page Dn). To move the highlighting from one side to the other, use and. The menu for function block rungs is very similar to the menu for the logic rungs. The operations of the function keys are identical, except for these differences: F2> Descriptor As for the logic rung, this function displays the description associated with each input. In this case, however, the input description is displayed in place of the input name. F1 returns to the function block rung display. F3> Comment Identical to logic rung operation. F4> X-Reference This is also very similar to cross reference for logic rungs. The only difference is that a logic rung has only one output, while a function block may have more than one. For a function block, the cross reference refers to the output that is currently visible at the top of the display. F5> Tune This function allows changes to the values of tunable parameters of a function block. Tuning is similar to editing, but differs in two important ways: During editing, any parameter or input may be changed. During tuning, only tunable parameters may be changed. NOTE: When the monitor is in tune mode, it does not read data from the processor module. Instead, it displays 0 and bad status for all the values. The values are displayed normally when the tune mode is exited. Editing is done off-line. Changes made to the ladder program affect only the version of the program that is in the personal computer. Download the edited program to make the changes in the processor module. Tuning is done on-line. The tuning changes are made not only to the version of the ladder program that is in the computer, but also to the version of the program that is in the processor MONITORING FUNCTION BLOCK RUNGS 4-6 I-E96-705A1

7 module. The changes are made to the program as it is being run by the module. F7> Prev Rung Displays the previous rung. F8> Next Rung Displays the next rung. F9> New Rung Selects any rung for display. Specify the rung by its rung number, one of its output tags, or its block number (block number preceded by #, e.g., #501). F10> Lists Refer to LISTS in this section. M> Rung and G> Go To Mark T> Trace Input and 0> Trace Out Mark rung (M) allows up to 100 rungs to be marked for easy recall using go to mark (G). These two commands provide a convenient method of tracing the flow of data into a rung. T steps from the current rung to any one of its inputs. Successive use of the T command traces out one particular path of data into the rung. Once a trace path has been established with the T command, the O command allows a trace back (i.e., output to input) along the path one step at a time. To use the command, display a rung, press T, then follow the screen prompts. LISTS This item is discussed separately because it pertains not just to an individual rung, but rather to the entire program. Press and the following menu appears: F10 F1> All Tags F2> Forced F3> Func Code Esc> Prev Menu F1> All Tags This function displays the tag list. F2> Forced This function displays the forced rung list. This is a list of rung numbers of all the rungs which have contacts or coils that are forced. 1. Press F2 to view the list of forced rungs. If no rungs are forced, the End of List message appears. 2. If the list is too long to fit on one screen, press F2 to scroll through the list. 3. To select a rung for display, press. 4. To terminate the display and return to the menu, press. Esc F1 LISTS I-E96-705A1 4-7

8 F3> Func Code This function displays a list of all the rungs that have a specified function code. QUITTING THE MONITOR To quit the monitor utility, press return to the main menu. Esc one or more times to QUITTING THE MONITOR 4-8 I-E96-705A1