Siemens SIMOTION D4x5-2 Commissioning And Hardware Installation Manual page 155

Note
● If illegal settings are made in the "D4x5-2 System Cycle Clocks" dialog box, an error is
signaled during the consistency check.
● If the required isochronous buses have not be configured, "???" is displayed under cycle
time in the "D4x5-2 System Cycle Clocks" dialog box.
The following conditions must also be met when using 2 servos:
● Bus cycle clock PROFIBUS DP = N x send cycle clock of the onboard PROFINET IO
interface X150
N = 2, 4, 8, 16, 32, 64 (N = 2 only for send cycle clock > 250 µs)
(for < V4.4: N = 2, 4, 8, 16 for all send cycle clocks)
● Send cycle clock of an optional second PROFINET IO interface (CBE30‑2) = PROFIBUS
DP bus cycle clock
● IPO ≥ IPO_fast
● Servo_fast and IPO_fast are always assigned to the PROFINET interface
● The onboard PROFINET interface can only be operated as sync master (consequently with
distributed synchronous operation via PROFINET, the D4x5‑2 cannot participate as sync
slave when Servo_fast/IPO_fast is used)
If the PROFINET interface is configured as sync slave, the faulty configuration is indicated
via a diagnostic buffer entry and the controller goes into starting inhibit.
Setting the bus cycle clocks
See Section Setting of the cycle clocks (one servo activated = default) (Page 152). This
procedure is described in:
● Setting the DP cycle in HW Config or
● Setting the send cycle clock in HW Config
Setting the cycle clock ratios
The set bus cycle clocks are displayed in SIMOTION SCOUT as the "Bus data cycle 1" and
"Bus data cycle 2" in the "System Cycle Clocks - D4x5-2" dialog box. Select SIMOTION D4x5‑2
and then select the "Set system cycle clocks" command from the "Target system" > "Expert"
menu.
Set the required cycle clock ratios for the Servo_fast/IPO_fast as well as the Servo/IPO/IPO_2
in the "System Cycle Clocks - D4x5-2" dialog box.
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B
Parameter assignment / addressing
6.5 Configuring PROFINET IO
155