Siemens SINAMICS S120 Function Manual page 688

Communication
11.2 Communication via PROFIBUS DP
Designations and descriptions for motion control
Table 11- 11 Time settings and meanings
Name Limit value
T 250 µs
BASE_DP
T T ≥ T
DP DP DP_MIN
T ≤ T
DP_MIN DP
T
MAPC
T 125 µs
BASE_IO
T T ≤ T < T
I I_MIN I
T T + T
O DX O_MIN
T T < T
DX DX DP
T -
PLL_W
T -
PLL_D
GC
Dx
MSG
RES
R
T
M
688
Description
Time base for T
DP cycle time
T = Dx + MSG + RES + GC
DP
T = multiple integer ∙ T
≤ T
DP
DP_MAX
T
DP_MIN
T
DP_MAX
Master application cycle time
This is the time frame in which the master application generates new setpoints
(e.g. in the position controller cycle).
T
MAPC
Time base for T
Time of actual-value sensing
DP
This is the time at which the actual position value is captured before the start of
each cycle.
T = integer multiple of T
I
T
I_MIN
object (SERVO/VECTOR) in the drive unit, minimum 125 µs.
Does not apply to vector V/f.
≤ T < T Time of setpoint transfer
O DP
This is the time at which the transferred setpoints (speed setpoint) are
accepted by the closed-loop control system after the start of the cycle.
T = integer multiple of T
O
T
O_MIN
object (SERVO/VECTOR) in the drive unit, minimum 125 µsec
Data exchange time
This is the time required within one cycle for transferring process data to all
available slaves.
PLL window
PLL delay time
Global Control Telegram (broadcast telegram)
Data_Exchange
This service is used to implement user data exchange between master and
slave 1 - n.
Acyclic service
This service is used to implement user data exchange between master and
slave 1 - n on an acyclic basis.
Reserve: "Active pause" until the isochronous cycle has expired
Computation time, speed or position controller in the master or slave
Master time
Start of closed-loop master control
DP
BASE_DP
= 1 ms
=32 ms
= integer multiple of T
DP
, T
I O
BASE_IO
corresponds to the longest current controller cycle (p0115[0]) of a drive
BASE_IO
corresponds to the longest speed controller cycle (p0115[1]) of a drive
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Drive functions