Operating Instructions

Chapter 4 - Parameters and Menu Structure
I/O and Hardware (M5)
146 | 187
Siemens Industry, Inc.
Siemens BT300 HVAC Drive
DPD01809
Smart Infrastructure
2019-05-29
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.