User Manual

Communication via RS485
5.6 Communication via P1 - only CU230P-2 HVAC, CU230P-2 BT
Fieldbuses
Function Manual, 04/2018, FW V4.7 SP10, A5E34229197B AE
163
5.6.1
Basic settings for communication via P1
Overview
Procedure
Proceed as follows to set communication via P1:
1. Select the default setting 114
– With Startdrive during commissioning step "Default setting of setpoint/command
sources":
114 "BT Mac 14: Communication P1"
– With the BOP-2 during basic commissioning under step "MAc PAr P15":
P_F _P1
– Via parameter number:
p0015 = 114
After selecting default setting 114, the inverter automatically sets the following
parameters:
– p2030 = 8: Fieldbus protocol P1
– p2020 = 5: Baud rate 4800 bit/s
– p0840 = 2090.0 The ON/OFF1 command is interconnected with control word 1, bit 0
– p0852 = 2090.3: The signal for "Enable operation" is interconnected with control
word 1, bit 3
– p2103[0] = 2090.7: The signal for "Acknowledge fault" is interconnected with control
word 1, bit 7
2. Set the address.
Irrespective of the address that has been set, every FLN device responds to telegrams
with address 99.
3. Make additional changes based on the parameters listed in the following sections.
4. If you are working with Startdrive, back up the settings so they are not lost if the power
fails.
You have now set the communication via P1.
❒
Additional parameters for adapting communication via P1
p2020 = 7: Baud rate 19200 bit/s
p1070 = 2050[1]: Receive main setpoint via fieldbus
p2051[0] = 52: Send status word via fieldbus
p2051[1] = 63: Send speed actual value via fieldbus