Operating Instructions

Chapter 4 - Parameters and Menu Structure
I/O and Hardware (M5)
163 | 187
Siemens Industry, Inc.
Siemens BT300 HVAC Drive
DPD01809
Smart Infrastructure
2019-05-29
Connection 1
Fieldbus protocol status (P5.9.2.2.1.1)
The Fieldbus Protocol Status provides the status of the protocol.
Table 130: FB Protocol Status.
INITIALIZING
Protocol is starting up.
STOPPED
Protocol is timed out or not used.
OPERATIONAL
Protocol is running.
FAULTED
Major fault in protocol, requires restarting. If fault remains
contact your local Siemens Industry office or Technical Support.
Communication status (P5.9.2.2.1.2)
The Communication status shows how many error messages and how many good messages the frequency
converter has received. The Communication status includes a common error counter that counts errors and a
counter for good messages.
This parameter displays as xx.yyy where xx indicates bad frames and yyy indicates good messages.
For example, 01.002 would represent one bad frame and two good messages.
Illegal functions (P5.9.2.2.1.3)
This value counts error situations. The function code received in the query refers to an invalid action for the
server (or slave). This corresponds to Modbus fault code 01h.
Illegal data addresses (P5.9.2.2.1.4)
This value counts error situations. The data address received in the query refers to an invalid address for the
server (or slave). This corresponds to Modbus fault code 02h.
Illegal data values (P5.9.2.2.1.5)
This value counts error situations. A value contained in the query data field refers to an invalid value for server
(or slave). This corresponds to Modbus fault code 03h.
Slave device busy (P5.9.2.2.1.6)
This value counts error situations. The server (or slave) is engaged in processing a long–duration program
command. The client (or master) should retransmit the message later when the server (or slave) is free. This
corresponds to Modbus fault code 06h.
Memory parity error (P5.9.2.2.1.7)
This value counts error situations. The server (or slave) attempted to read record file but detected a parity
error in the memory. This corresponds to Modbus fault code 08h.
Slave device failure (P5.9.2.2.1.8)
This value counts error situations. An unrecoverable error occurred while the server (or slave) was attempting
to perform the requested action. This corresponds to Modbus fault code 04h.
Last fault response (P5.9.2.2.1.9)
Displays the last fault response as Fault code.