Structure Of The Source Or Destination Data Blocks In The Pc Memory For The Individual Modes; Structure Of A Machine Data Db In The Pc Memory - Siemens SIMATIC S5 Manual

Standard Function Block FB165
The data words DWn+6 to DWn+l 4 are used by function block FBI 65 and you can only read
them.
E.g. evaluation of the interface error in the high byte of the condition code bytes:
DL n+7 and DL n+l 1:
With indirect parameter assignment, you enter the required mode in data word DWn of the axis
data block. The function block FBI 65 executes the entered mode and acknowledges by entering
the value KHOOOO in data word DWn. You can now enter a new mode.
Schematic diagram of indirect parameter assignment:
Open axis data block DB/DX (DBNR)
yes
New job (mode) can be entered
Call FBI 65 PER:PDAT
6.3.8 Structure of the Source or Destination Data Blocks in the PC Memory for the
Individual Modes

Structure of a Machine Data DB in the PC Memory

6.3.8.1
BA = 20: machine data transferred from PC to IP247,
BA = 21: machine data deleted on the IP247,
BA = 67: machine data read from the IP247.
The individual machine data are explained in Section 2.5 "Machine Data and their Structure".
6-38
High byte of the condition codeword. Corresponds to flag byte FY250.
DW n = KHOOOO (DWNR)
I