Siemens SIMATIC S5 Manual page 44

S5-115F Manual
Plaintext Line
The plaintext line is assigned in each case to the I/O bit or word at which the cursor is currently
located. At the beginning of the line is the identifier indicating the bit or word at which the cursor
is located (e.g. digital input 2.3 or analog input 3). The plaintext display then follows in the form
of eight characters of short plaintext and 40 characters of expanded plaintext. A typical line might
read:
Example:
Digital input 2.3 VALVE 1 OPEN VALVE PUMP
The plaintext must have been generated using the available STEP 5 tools. If there is no plaintext
available for a specific purpose, only the number of the I/O bit or word is displayed.
Characteristics Field
The characteristics field is the second window in the I/O configuration form. This field, too, is
assigned to the current cursor position, i.e. the characteristics of the current type are displayed,
provided it is set.
The characteristics field is divided into two parts:
The left part contains the fixed data (characteristics) allocated to a specific type. The right part
contains the data to be initialized by the user.
The entries in the characteristics field are checked by the system for validity. When an invalid entry
is made, the user receives the following messages:
• Double assignment of DBs with different types
Message: DB assigned
• Double assignment of feedback addresses or any attempt to define an address assigned with a
valid type as a feedback address.
Message: e.g. DQ assigned
• Mixing types within one word
Message: Type combination invalid
EWA 4NEB 811 6149-02
Configuring with COM 115F
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