6.9 Drive control via BACnet MS/TP
Settings for BACnet MS/TP
Parameter Explanation
p2020 Fieldbus interface bau‐
drate (Factory setting: 6)
6: 9600 baud
7: 19200 baud
8: 38400 baud
10: 76800 baud
p2021 Fieldbus interface address (Factory setting: 1)
Valid USS addresses: 0 … 127.
The parameter is only active if address 0 is set at the Control Unit address switch.
A change only becomes active after the inverter power supply is switched off and switched
on again.
p2024 Fieldbus interface times [0] maximum permissible processing time (APDU timeout)
p2025 Fieldbus SS BACnet
settings
[0] = device object instance number
[1] = info maximum number frames
[2] = APDU number of retries
[3] = maximum master address
p2026 Fieldbus interface BACnet COV increment
Change in value at which point the inverter sends and UnConfirmedCOVNotification or
and ConfirmedCOVNotification.
r2029 Fieldbus interface error
statistics
[0] number of error-free tele‐
grams
[1] number of rejected tele‐
grams
[2] number of framing errors
[3] number of overrun errors
[4] number of parity errors
[5] number of starting charac‐
ter errors
[6] number of checksum errors
[7] number of length errors
p2030 = 5 Fieldbus interface protocol selection
p0015 = 110 sets p2013 = 5 → BACnet MS/TP
Control word 1 (STW1)
Bit Meaning Explanation BACNet Signal inter‐
connection in
the inverter
0 0 = OFF1 The motor brakes with the ramp-down
time p1121 of the ramp-function gen‐
erator. The inverter switches off the
motor at standstill.
BV20 p0840[0] =
r2090.0
0 → 1 = ON The inverter goes into the "ready"
state. If, in addition bit 3 = 1, then the
inverter switches on the motor.
1 0 = OFF2 Switch off the motor immediately, the
motor then coasts down to a standstill.
BV27 p0844[0] =
r2090.1
1 = No OFF2 The motor can be switched on (ON
command).
Advanced commissioning
6.9 Drive control via BACnet MS/TP
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE 241
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