Unknown instruction in alarm message

To add current information (such as from a process) to block-related and symbolrelated

messages, you can insert associated values at any point in a message text.

1. Create a block with the following structure:

@<No. of associated value><Element type><Format code>@.

2. Insert this block at the locations in the message text where the associated

value is to be displayed.

This parameter assigns a unique identification to the data type of the associated

value:

Y BYTE

W WORD

X DWORD

I Integer

D Integer

B BOOL

C CHAR

R REAL

The element type only uniquely specifies the data type transferred by the PLC. It is

not used as a casting operator.

Programming with STEP 7

A5E00706944-01 16-29

These codes specify the output format for the associated value on the display

device. A format instruction is introduced by a "%" sign. For message texts, there

are the following fixed message codes:

%[i]X Hex value with i index

%[i]u Unsigned decimal value

with i index

%[i]d Signed decimal value

with i index

%[i]b Binary value with i index

%[i][.y]f Integer (fixed-point no.)

Signed value with the format

[ - ]dddd.dddd

decimal point and i total places

%[i]s Character string (ANSI string) with i places

Characters are printed to the first 0 byte (00hex).

%t#<name of the text library> Access to text library.

If the format code is too small, the value is still output in its full length.

If the format code is too large, an appropriate number of blanks is output before the

value.

Note that you can also optionally specify the "[i]", in which case you must leave out

the brackets when you enter this parameter.

Programming with STEP 7

16-30 A5E00706944-01

@1I%6d@: The value from associated value 1 is displayed as a decimal number

having a maximum of 6 places.

@2R%6f@: The value "5.4," for example, from associated value 2 is displayed as

an integer "5.4" (three leading blanks).

@2R%2f@: The value "5.4," for example, from associated value 2 is displayed as

an integer "5.4" (for a number of places that is too small, truncation does not

occur).

@1W%t#Textbib1@: Associated value 1 of the data type WORD is the index with

which the text to be used is referenced in the text library TextLib1.

When using S7-PDIAG, you must always indicate "C" for the element type CHAR

and "R" for the element type REAL. For all other element types valid for S7-PDIAG

(BOOL, BYTE, WORD, INT, DWORD and DINT), you must always specify "X".

If you wish to pass one of the ALARM_S blocks more than one associated value,

you can send an array with a maximum length of 12 bytes. This can be, for

example, a maximum of 12 bytes or characters, a maximum of 6 words or Int or a