Siemens bt300 Operator's Manual page 138

Chapter 4 - Parameters and Menu Structure
I/O and Hardware (M5)
Structure Parameter
M5.8.3.2.8 Slave Dev. Failure
M5.8.3.2.9 Last Fault
Response
M5.8.3.2.10 Control Word
M5.8.3.2.11 Status Word
Modbus RTU Parameters
Slave address (P5.8.3.1.1)
Each slave must have a unique address (from 1 through 247) so that it can be addressed independently from other
nodes.
Baud rate (P5.8.3.1.2)
Select the communication speed for the network. The default value is 9600 baud.
Parity type (P5.8.3.1.3)
You can select the parity type for the network.
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Siemens Industry, Inc.
Building Technologies
Unit Min Max
Siemens BT300 HVAC Drive
Default ID
2388 Displays if the server (slave) has
detected a parity error in the
memory when reading a record.
2389 Displays the last fault response as
fault code as follows:
0 = None (No fault detected since
last power-up)
1 = Connection Timeout (time
defined in Comm. Timeout
(M5.8.3.1.5) has expired and token
has not be received)
2390 Displays the control word received
from the fieldbus. Based on 32 bits
as described below:
B0 = Start/Stop (0 = Stop; 1 = Start)
B1 = Direction (0 = Forward; 1 =
Reverse)
B2 = Fault Reset (0 = No action; 1 =
Reset faults)
B3 - B31 = Not used
2391 Displays the status word sent to the
fieldbus. Based on 32 bits as
described below:
B0 = Ready (0 = Not Ready; 1 =
Ready)
B1 = Run (0 = Stopped; 1 =
Running)
B2 = Direction (0 = Forward; 1 =
Reverse)
B3 = Fault (0 = No faulted; 1 =
Faulted)
B4 = Alarm (0 = No alarm; 1 =
Alarm)
B5 = At Reference (0 = False; 1 =
True)
B6 = Zero Speed (0 = False; 1 =
True)
Description
DPD01809
2016-06-07