Siemens SINUMERIK 840Di Function Manual page 966

Detailed description
2.7 Structure and functions of the basic program
Note
Unused bits and bytes are listed, for example, with the designation "f56_3".
"56": Byte address of the relevant data block
"3": Bit number in this byte
English versions of the UDT interfaces are available in SW 4.4 and higher under
NST_UDTB.AWL and TM_UDTB.AWL. Only the English versions will continue to be
developed in future versions.
Proceed as follows to convert the German language symbols used thus far into English
language symbols:
• If sources are not being used, only the NST_UDTB.AWL and TM_UDTB.AWL blocks
• If you are using sources, the sources must first be compiled with the previous UDTs
2.7.8 M decoding acc. to list
Description of Functions
When the M decoding according to list function is activated via the BP parameter of
FB1 "ListMDecGrp", up to 256 M functions with extended address can be decoded by the
basic program.
The assignment between the M function with extended address and the bit to be set in the
signal list is defined in the decoding list. The signals are grouped for this purpose.
The signal list contains 16 groups with 16 bits each as decoded signals.
There is only one decoding list and one signal list, i.e., this is a crosschannel function.
The M functions are decoded. Once they are entered in the decoding list, then the
associated bit in the signal list is set.
When the bit is set in the signal list, the readin disable in the associated NC channel is set
simultaneously by the basic program.
The readin disable in the channel is reset once the user has reset all the bits output by this
channel and thus acknowledged them.
The output of an M function decoded in the list as a highspeed auxiliary function does not
result in a readin disable.
2-54
must be translated. The new symbols can then be seen immediately.
(NST_UDT.AWL and TM_UDT.AWL). It is then necessary to compile NST_UDTB.AWL
and TM_UDTB.AWL. After this step, you need to initiate a reverse compilation into the
sources in accordance with the previous source setup. The interface symbols are then
permanently converted to English.
Power Line Basic PLC Program (P3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0