6 NC Channel/PLC Interface (DB 10 ... DB 25)
01.93
6.6.1 General
t
c
B
A
1
2
3
1
2
3
t
c
A: Information output before axis movement
B: Information output with axis movement
1:
Reading NC block into main memory
2:
Information at interface (word and modification signal; t
c
= PLC cycle time)
3:
TRAVEL COMMAND signal
In the case of M functions, decoded signals are output in addition to the words, always in both
static and dynamic form. Static signals are set once by the PLC basic program after decoding.
The following M functions are decoded:
Without extended address: M00 - M99 in channel-specific DB (DB 10 ... 25)
With extended address: according to decoding list for all channels in DB 30
If an M function is not in the M00 - M99 range and not contained in the decoding list, the
signals M WORD MODIFICATION and M WORD NOT DECODED are output. For M00 - M99
the extended address is = 0.
6
–
40
©
Siemens AG 1991 All Rights Reserved 6ZB5 410-0HE02
SINUMERIK 880 (PJ)
