Siemens SINUMERIK 828D Function Manual page 973

State
WORD H WORD L
0 6
0 7
0 8
0 9
0 10
0 11
1 ... 8 13 (0x0d)
0 15 (0x0f)
Configuration steps
To be able to read a GUD variable, its name must be stored in a string variable. The data block with this string
variable must be defined in the symbol table so that the "Addr" parameter can be assigned symbolically for FB
GETGUD. A structure variable can be defined optionally in any data area of the PLC to receive the variable
pointer (see specification in following example).
Pulse diagram
(1) Activation of function
(2) Positive acknowledgment: variables have been written
(3) Reset function activation after receipt of acknowledgment
(4) Signal change by means of FB
(5) Not permissible
(6) Negative acknowledgment: Error has occurred, error code in the output parameter "State"
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Meaning
FIFO full
Option not set
Incorrect target area (SD) RD may not be local data
Transmission occupied
Error in addressing
Address of variable
invalid
ANY data reference
incorrect
String more than 32
characters
P3: Basic PLC Program for SINUMERIK 840D sl
Note
Job must be repeated,
since queue is full
BP parameter "NCKomm" is not set
Job must be repeated
Unit contains value 0
Address check (or variable name),
area, unit
String/NcVar data required has not
been parameterized
GUD variable name too long
13.13 Block descriptions
973