Chapter 4 - Parameters and Menu Structure
I/O and Hardware (M5)
139 | 180
Siemens Industry, Inc.
Siemens BT300 HVAC Drive
DPD01809
Building Technologies
2016-06-07
Table 107: Parity Type.
Parity Type
Stopbits
Even
1
Odd
1
None
2
Communication Time-out (P5.8.3.1.5)
The Modbus board initiates a communication error for a time defined with this parameter. 0 means that no fault is
generated.
Modbus RTU Monitoring Values
Fieldbus Protocol Status (P5.8.3.2.1)
Field Protocol Status indicates the status of the protocol.
Table 108: FB Protocol Statuses.
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
persists, contact Technical Support.
Communication Status (P5.8.3.2.2)
The Communication Status shows how many errors and how many good messages the variable frequency drive
has received. The Communication status includes a common error counter that counts CRC and parity errors and
a counter for good messages.
Only messages to the current slave in use are counted in the 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 (P5.8.3.2.3)
The function code received in the query refers to an invalid action for the server (or slave).
Illegal data addresses (P5.8.3.2.4)
The data address received in the query refers to an invalid address for the server (or slave).
Illegal data values (P5.8.3.2.5)
A value contained in the query data field refers to an invalid value for server (or slave).
Slave device busy (P5.8.3.2.6)
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.
Memory parity error (P5.8.3.2.7)
The server (or slave) attempted to read record file but detected a parity error in the memory.
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