Function diagram
87654321
fp_mc_122_e.vsd
PROFIBUS CBP2
MASTERDRIVES MC
23.10.02
Synchronizing
-122 -
V2.5
Synchronizing
PLL
[420.5]
Pulse frequency
1
Alarm A003 "not synchronous"
(with transceiver)
(Dispatcher only)
Only allowed for PWE 2 or 20 (inactive).
Fine synchronization
r748.001: Number of error-free synchronizing telegrams
.002: Unassigned
.003: Unassigned
.004: Unassigned
.005: Unassigned
.006: Unassigned
.007: Unassigned
.008: Unassigned
.009: Synchronism deviation
(65535 Synchronization not active)
permissible deviation between 65515 and 20
.010: Corrected pulse period in units of 100 ns
.011: T0 counter (0 with active synchronization)
.012: Internal
.013: Internal
.014: Time counter
.015: Implemented bus cycle time
.016: Internal
Diagnosis
PROFIBUS
synchronization
Fine synchronization can cause a smaller
synchronization deviation (r748.9).
Fine synchronization has a greater effect the
higher the DP cycle/T2 ratio.
n959.22 = 4
Maximum
synchronized
time slot
0...10
P754 (0)
K
P753 (0)
Sync time counter
PROFIBUS
cycle time
r748.15
B0043 Drive in synchronism
K0260
Time counter
U950.22 = ___(20)
SLB Diagnosis
r748
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