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Siemens
Standard application AHU
CE1P3977en_02
Building Technologies
Communication
01.02.2010
Parameter
Range
Function
−
2 RU
ing 1 RU, 1snsr+RU or 2 RU, the interface to the
room unit connection is enabled.
Settings
Goes to page with all settings relevant to param-
eterizing room units.
Inputs
Go to page with temperature inputs.
Reset required !!
−
−
Execute
As a matter of principle, the controller must be
set after parameterization to assume the data.
Unit > System overview > Communication > Modbus
Parameter
Range
Function
Communication
−
OK
−
Alarm
Status of Modbus communication.
Internal
−
Disable
−
Master
−
Slave
Generally enables internal MODBUS and func-
tion of MODBUS over RS485:
−
Internal interface is disabled.
−
Internal RS485 interface is master.
−
Internal RS485 interface is slave.
Internal Slave address
0…247
Controller address on the RS485 bus.
Internal settings
RS485
Go to parameter page for RS485 MODBUS in-
terface.
TCP/IP
−
Go to parameter page for TCP/IP settings.
Module1 Modbus
−
Go to parameter page for MODBUS interface on
module 1.
Module1 Modbus
−
Go to parameter page for MODBUS interface on
module 1.
Module1 Modbus
−
−
Go to parameterization page for MODBUS
interface on module 1.
Unit > System overview > Communication > Modbus > RS485
Parameter
Range
Function
−
−
Baud rate
−
2400
−
4800
−
9600
−
19200
−
38400
Transmission rate on bus. All participants must
have the same setting.
Parity
−
Even
−
Odd
−
None
Parity. All participants must have the same set-
ting.
Stop bit
−
One
−
Two
Number of stop bits. All participants must have
the same setting.
Delay time
0…2147483647 [ms]
Response telegram delay.
Parameter
Range
Function
Response timeout
0…2147483647 [ms]
Settings access time for master.
The master must undertake read access within this
period, otherwise an alarm is triggered (this func-
tion is not yet fully implemented).
Termination
−
Passive
Internal bus connection for the basis controller:
−
No bus terminating resistor.
MODBUS configuration
RS485 MODBUS
parameterization
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 120
Содержание Climatix Series
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