06.03
10.5 Axes and spindles
10-324
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
Assigning the actual value channels
The 1st measuring system (Index 0) of the machine axis on the measuring input
of the SIMODRIVE 611U drive module is assigned via the axis–specifiec ma-
chine data:
MD 30220: ENC_MODUL_NR[0] = 1
where 1 = (Index 0 of the relevant M 1)
The 2nd measuring system (Index 1) of the machine axis on the measuring cir-
cuit input of the ADI4 module is assigned via the axis–specific machine data:
MD 30220: ENC_MODUL_NR[1] = 4
where 4 = (Index 3 of the relevant M 1)
Also refer to Subsection 10.5.4, Page 10-315.
Table 10-24
Drive configuration: Machine data
Number
Identifier
Name/remarks
Ref.
General ($MN_ ...)
13050
DRIVE_LOGIC_ADDRESS[n]
Logical I/O address of drive
G2
13060
DRIVE_TELEGRAM_TYPE[n].
Drive message frame type for the drives con-
nected to PROFIBUS DP
G2
30220
ENC_MODULE_NR[0]
Actual-value assignment: Logic drive number for
position measuring system 1
30220
ENC_MODULE_NR[1]
Actual-value assignment: Logic drive number for
position measuring system 2
Table 10-25
Switching over the position measuring system: Interface signals
DB
Number
Bit, Byte
Name
Ref.
Axis/spindle-specific
Signals from PLC to axis/spindle
31, ...
1.5
Position measuring system 1
31, ...
1.6
Position measuring system 2
Machine data
Interface signals
10 NC Start-Up with HMI Advanced
