Siemens SINUMERIK 840C Installation Instructions Manual page 597

09.95
Example:
Value in PLC MD 11 = 71 when 1st machine control panel in PLC MD 128 is set to start
address 64.
I byte 0
:
:
:
I byte 71
I byte 72
:
:
I byte 127
Max. 128 bytes on 135 WB
13
14
Default value
0
17
Default value
1
This timeout is specified as the number of PLC cycles that are allowed to elapse before the
user interface (UI) is enabled, and applies to all user interfaces on a PLC. When the timeout
has expired, a negative acknowledgement is sent in response to a frame sent to the user
interface.
Default value: 1
Max. input value: 10 i.e. the user interface must be free again after ten PLC cycles
See also Computer Link
18
Default value
0
A frame sent to the host computer can be output only via this user interface during
synchronization. See Computer Link.
© Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
Signals from the machine
Can be used as additional flag area
Reserved
Reserved
Lower input limit
–
No. of wait cycles for assigned UI
Lower input limit
0
i.e. the user interface must be free again after one PLC cycle
No. of the UI during synchronization
Lower input limit
0
6FC5197- AA50
8 PLC Machine Data (PLC MD)
8.2 PLC MD for the operating system (system data)
Upper input limit
–
Upper input limit
10
Upper input limit
31
DB 60
DW 13
DB 60
DW 14
Units
–
DB 60
DW 17
Units
–
DB 60
DW 18
Units
–
8–5