5 Parameterisation
BU 0280 GB Subject to technical amendments 53
Parameter
{Factory setting}
Setting value / Description / Note Device Supervisor
Parameter
set
P552 … [-01]
… [-02]
System bus master cycle time
S
0 / 0.1 … 100.0 ms
{ 0 }
In this parameter, the cycle time for the system bus master mode and the CAN open encoder is
set (see P503/514/515):
… [-01] = Cycle time for system bus master functions
… [02] = Cycle time for system bus absolute value encoder
With the setting
0 “Auto” the default value (see table) is used.
According to the baud rate set, there are different minimum values for the actual cycle time:
Baud rate Minimum value t
Z
System bus master
default
System bus absolute
default
10kBaud 10ms 50ms 20ms
20kBaud 10ms 25ms 20ms
50kBaud 5ms 10ms 10ms
100kBaud 2ms 5ms 5ms
125kBaud 2ms 5ms 5ms
250kBaud 1ms 5ms 2ms
500kBaud 1ms 5ms 2ms
1000kBaud 1ms 5ms 2ms
P560 Save in EEPROM
S
0 ... 1
{ 1 }
0 = Changes to the parameter settings are no longer saved on the EEPROM. Previously
saved settings remain stored, even if the FI is disconnected from the mains; however
new changes are not saved after a mains failure.
1 = All parameter changes are automatically written to the EEPROM and remain stored there
even if the FI is disconnected from the mains supply.
NOTE:
If BUS communication is used to implement parameter changes, it must be
ensured that the maximum number of write cycles (100,000 x) in the EEPROM is
not exceeded.
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