Siemens SINUMERIK 840D sl Function Manual page 340

G2: Velocities, setpoint / actual value systems, closed-loop control
7.4 Setpoint/actual-value system
MD30220
Actual value assignment: Drive number/measuring circuit number
System
840D sl
MD30230
Actual value assignment: Input on drive module/measuring circuit module
System
840D sl
MD30240
Encoder type of the actual value sensing (actual position value)
System
840D sl
Note:
Corresponds to PROFIdrive parameter p979
340
$MA_ENC_MODULE_NR[ n ]
Value Meaning
x The logical I/O address of the drive is assigned from MD13050
$MN_DRIVE_LOGIC_ADDRESS[ n ] via the drive number.
The drive number (x) results from the index (n) of MD13050:
x = n + 1
$MA_ENC_INPUT_NR[ n ]
Value Meaning
x Number of the encoder interface within the PROFIdrive telegram
Examples
PROFIdrive telegram 103
x = 1 → 1st encoder interface (G1_ZSW, G1_XIST1, G1_XIST2)
x = 2 → 2nd encoder interface (G2_ZSW, G2_XIST1, G2_XIST2)
PROFIdrive telegram 118
x = 1 → 1st encoder interface (G2_ZSW, G2_XIST1, G2_XIST2)
x = 2 → 2nd encoder interface (G3_ZSW, G3_XIST1, G3_XIST2)
Note:
For SINAMICS S120:
- Encoder 1 (G1_...): Motor encoder
- Encoder 2 (G2_...): Direct measuring system
- Encoder 3 (G3_...): Additional measuring system
$MA_ENC_TYPE[ n ]
Value Meaning
0 Simulation (operation without encoder)
1 Incremental encoder
4 Absolute encoder
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions