Siemens LC 500, Sitrans Rotary switch, Push-buttons, Access to a menu item, Adjusting the value

The rotary switch

The rotary switch gives you access first to the menu level and then to the menu item.

Interface

			B
	9	A
8
	7
		6
		5

C
	D
	F
	0
	2	1
4	3

The rotary switch has a small slot where the current position can be read. The positions are read clockwise, and in increasing order: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F. The position wraps from F to 0.

The switch can be turned in either direction. When it is turned to a new position, the LCD displays the new menu selection for 1 second, followed by the data for that position.

Certain menu selections return more than one piece of information per item: in that case the display alternates between the two values, for example, PV Value / Fault status.

User

The push-buttons

The push-buttons allow you to change the value of a menu item. Use the RED (+) button to adjust a value up; the BLUE (–) button to adjust a value down; or press both simultaneously for special applications. For a table showing the combinations of rotary switch positions and button presses used to carry out different functions, see page 41.

Access to a menu item:

Notes:

•For a detailed description of each menu item, see Appendix A, page 54: the functions of each menu item are illustrated in application examples on page 93 to 94.

•Change over from Menu LEVEL 0 to Menu LEVEL 1 is only possible at position 0, from menu item 00 to 10 or vice-versa. (See page 42 for detailed instructions.)

1.First select Menu LEVEL 0 or Menu LEVEL 1.

2.Turn the rotary switch to the number of the desired item.

Adjusting the value

Notes:

•The push buttons are preset with a delay called the debounce time.

•Keeping one or both buttons pressed continuously will trigger an auto-repeat in some menus.

1.Select a menu item.

2.Press the RED (+) or BLUE (–) push button to adjust the value up or down: acceptance is indicated when the left-most colon on the LCD appears. (You have to press longer than the debounce time to have the action accepted: the debounce time varies according to the menu item selected.)

Page 38 SITRANS LC 500 – INSTRUCTION MANUAL 7ML19985GE01