Db 3 Data Transfer Areas - Siemens SINUMERIK 840C Installation Manual

5 PLC Interface

5.2.3 DB 3 data transfer areas

5.2.3 DB 3 data transfer areas
15 14
Byte No.
7
DL 0
Data Data
channel 8 channel 7
DR 0
Data Data
channel 16 channel 15
DL 1
Data Data
channel 24 channel 23
DR 1
Data Data
channel 32 channel 31
S t a t u s b i ts
DL 2
Data Data
channel 8 channel 7
DR 2 S t a t u s b i ts
Data Data
channel 16 channel 15
DL 3 S t a t u s b i ts
Data Data
channel 24 channel 23
DR 3 S t a t u s b i ts
Data Data
channel 32 channel 31
DW 4
.
. .
DR12
DW 13
DL 14
DR 14
.
.
.
DL 29
DR 29
DL 30
DR 30
DL x
DR x Error when Error when
writing NC reading NC
data data
DL
x+1
Bit 7 Bit 6
DR
x+1
Bit 15 Bit 14
DL
x+2
Bit 23 Bit 22
DR
x+2
Bit 31 Bit 30
Note:
For a description of the "Fast data channels" function, please refer to the Installation
Instructions, SINUMERIK 840C, SW 4.
_____________
x = Data transmission range nos. 1 to 32 via pointer (DW 14 to 29)
5–20
Data transfer areas
13 12
Bit No.
6 5 4
A c t i v a t i o n b i ts
Data Data
channel 6 channel 5
A c t i v a t i o n b i ts
Data Data
channel 14 channel 13
A c t i v a t i o n b i ts
Data Data
channel 22 channel 21
A c t i v a t i o n b i ts
Data Data
channel 30 channel 29
f r o m NC " V a l i d c o n f i g u r a t i o n o f d a t a c h a n n e l "
Data Data
channel 6 channel 5
f r o m NC " V a l i d c o n f i g u r a t i o n o f d a t a c h a n n e l "
Data Data
channel 14 channel 13
f r o m NC " V a l i d c o n f i g u r a t i o n o f d a t a c h a n n e l "
Data Data
channel 22 channel 21
f r o m NC " V a l i d c o n f i g u r a t i o n o f d a t a c h a n n e l "
Data Data
channel 30 channel 29
R e s e r v e d
.
. .
Synchronous data channels
R e s e r v e d
P o i n t e r t o d a t a t r a n f e r a r e a 1
( = N o. o f d a t a w o r d )
P o i n t e r t o d a t a t r a n f e r a r e a 2
( = N o. o f d a t a w o r d )
.
.
.
P o i n t e r t o d a t a t r a n f e r a r e a 31
( = N o. o f d a t a w o r d )
P o i n t e r t o d a t a t r a n f e r a r e a 32
( = N o. o f d a t a w o r d )
J o b N o . (a c k n o w l e d g e m e n t f r o m N C )
C o n t r o l b i t s
V A L U E
Bit 5 Bit 4
V A L U E
Bit 13 Bit 12
V A L U E
Bit 21 Bit 20
V A L U E
Bit 29 Bit 28
© Siemens AG 1992 All Rights Reserved
11 10 9
3 2 1
f r o m P L C
Data Data Data
channel 4 channel 3 channel 2
f r o m P L C
Data Data Data
channel 12 channel 11 channel 10
f r o m P L C
Data Data Data
channel 20 channel 19 channel 18
f r o m P L C
Data Data Data
channel 28 channel 27 channel 26
Data Data Data
channel 4 channel 3 channel 2
Data Data Data
channel 12 channel 11 channel 10
Data Data Data
channel 20 channel 19 channel 18
Data Data Data
channel 28 channel 27 channel 26
Value new
Write NC
data
Synchro- "New
nous data value" write
channels NC data
Bit 3 Bit 2 Bit 1
Bit 11 Bit 10 Bit 9
Bit 19 Bit 18 Bit 17
Bit 27 Bit 26 Bit 25
6FC5197- AA60
SINUMERIK 840C (IA)
07.97
8
0
Data
channel 1
Data
channel 9
Data
channel 17
Data
channel 25
Data
channel 1
Data
channel 9
Data
channel 17
Data
channel 25
.
. .
Value new
Read NC
data
.
.
.
"New
value" read
NC data
Bit 0
Bit 8
Bit 16
Bit 24