Siemens SINUMERIK 840Di Function Manual page 1290

Detailed Description
2.12 Block descriptions
State
WORD
H
0
0
1 to 8
0
1 to 8
0
0
1 to 8
Configuration steps
Proceed as follows to read NC variables:
• Select variables with the NC VAR selector.
• Save selected variables in a *.VAR file
• Generate a STEP 7 *.STL source file.
• Generate a DB with the associated address data.
• Enter the symbol for the generated DB in the symbol table so that it is possible to access
• Set FB 2 parameters
Pulse diagram
(1)
(2)
(3)
(4)
(5)
(6)
2-96
Meaning
WORD L
6 FIFO full
7 Option not set
8 Incorrect target area (RD)
9 Transmission occupied
10 Error in variable addressing
11 Address of variable invalid
12 NumVar = 0
13 (0x0d) ANY date reference
incorrect
the address parameters symbolically in the user program.
Activation of function
Positive acknowledgment: Receive new data
Reset function activation after receipt of acknowledgment
Signal change by means of FB
Not permissible
Negative acknowledgment: Error has occurred, error code in output parameter state
Note
Job must be repeated since queue is full
BP parameter "NCKomm" is not set
RD1 to RD8 may not be local data
Job must be repeated
Unit or column/line contains value 0
Check Addr (or variable name), area, unit
Check parameter NumVar
NcVar date required has not been
parameterized
PLC Basic Program Solution Line (P3 sl)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0