Communication Interfaces; Knx Interface; Knx Communication Objects - HMS Networks Intesis INKNXMBM1000200 User Manual

Communication Interfaces

5. Communication Interfaces

5.1. KNX Interface

This Intesis gateway continuously checks the status of the KNX bus. The behavior of each signal point is defined
by the flags you set in the ETS configuration tool. This means, for instance, that when the communication is
restored after a blackout, the gateway will retransmit the status of all the KNX groups marked as Transmit (T) and
the update groups marked as Update (U).
NOTE
By default, the gateway's physical address is 15.15.255. If you change this value, the gateway will
reboot, keeping all its configuration parameters and proceeding to poll the bus to update all status
objects for the Modbus devices connected to it.
IMPORTANT
If having communication issues in large installations, check if a line coupler is filtering the telegrams
from/to the Intesis gateway.

5.1.1. KNX Communication Objects

Object
Name
number
201 Status_Heartbeat
202 Status_Error_Alarm
Status_Modbus_Dev_
203
Error
Status_Modbus_Reg_
204
Error
205 Status_Error_Text
Table 1. Modbus exception codes
Code Name
01 Illegal function
02 Illegal data address
03 Illegal data value
04 Server device failure
05 Acknowledge
06 Server device busy
07 Memory parity error
USER MANUAL Version 1.0
Datapoint type
Length
DPT_Name
1 bit State 1.011
1 bit Alarm 1.005
2 bytes 2 byte signed value 8.xxx
4 byte unsigned
4 bytes 12.xxx
value
Character string
14 bytes 16.001
(ISO 9959-1)
The function code received in the query is not an allowable action for the server. Example: The function code
only applies to newer devices and was not implemented in the selected device.
The data address received in the query is not an allowable address for the server (the combination of the
reference number and transfer length is invalid). Example: The submitted request attempts to operate on
registers 96, 97, 98, 99, and 100, and there is no register with address 100.
A value contained in the query data field is not an allowable value for the server. This indicates a fault in the
structure of the remainder of a complex request, such as that the implied length is incorrect.
An unrecoverable error occurred while the server attempted to perform the requested action.
The server is processing the request, but it will require a long time to do so. This response is returned to
prevent a timeout error on the client side.
The server is processing a long–duration program command. The client should retransmit the message later
when the server is free.
The server detected a parity error in the memory when reading the record file. The client may require service
on the server device to retry the request.
Modbus RTU Client to KNX TP Gateway
Flags
DPT_ID R W T U
R T 1: Active
R T 0: No alarm; 1: Alarm
Address of the last Modbus server device
R T
that currently has an error
Register address of the last Modbus server
R T
device that currently has an error
MBM Overload: an electric overload is
detected from the power supply.
Error Text: string message about the error
or the alarm in the format ss:ff:aaaa:ee
R T
• ss: server id (00 .. 3F)
• ff: function code (00 .. 10)
• aaaa: address (0000 .. FFFF)
• ee: exception code (see tables below)
Meaning
Function
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