I/O Field; Description; Touch Control - Siemens SIMATIC TP 270 Operating Instructions Manual

Operate project
9.2 Controlling graphic objects
9.2.3

I/O field

9.2.3.1

Description

Purpose
You enter numeric or alphanumeric values in an I/O field. An example of a numerical value is
the number 80 as setpoint for a temperature. An alphanumeric value is the text "Service" as
user name.
Layout
The layout of an I/O field depends on its configuration in WinCC flexible, e.g.:
• Numeric I/O field
• Alphanumeric I/O field
• I/O field for date and time
• I/O field for password input
Behavior
If limit values are configured for the tag that is linked to the I/O field, the input value is only
applied if the value is within the configured limits.
Any input values which are outside the range are rejected. The original value is displayed on
the I/O field instead, and a system alarm is output on the HMI device.
9.2.3.2

Touch control

Procedure
Press the I/O field on the touch screen of the HMI device. The screen keyboard
automatically appears. Enter the desired value using the screen keyboard. Confirm your
input with <Enter> or cancel it with <Esc>. After the input has been confirmed or canceled,
the screen keyboard is automatically closed.
9-20
For input of numbers in decimal, hexadecimal or binary format.
For input of character chains
For input of calendar dates or time information. The format depends on the language set
on the HMI device.
For concealed input of a password. The input character string is displayed with
placeholders (*).
TP 270, OP 270, MP 270B (WinCC flexible)
Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0