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MODBUS
A MODBUS interface is always available in the controller, RS485 or TCP/IP can be
selected.
INITIATION OF INTERNAL MODBUS INTERFACE:
Included units
– Climatix POL 6xx controller
Prerequisites for initiation:
• Functional application (for example, standard application for air handling
system) read and started in the Climatix controller.
Name
Type
Description
Communication
module
POL902.00/STD
External Modbus module
2 Modbus slave outputs (RTU/RS485)
Internal Modbus RTU
PROC1 Climatix POL63x.00/STD
Internal Modbus Master, used for Pressure sensor
or Internal Modbus Slave
Used for BMS (if Pressure sensor is not used).
Internal Modbus TCP/IP
PROC1 Climatix POL63x.00/STD
Internal Modbus Slave via RJ45/Ethernet
connection labelled T-IP
* Modbus RTU may be unavailable when GP/GF sensors are connected via Modbus Master.
If BMS wants to connect via RTU, an external communication module POL902.00/STD must be used.
Main index > System overview > Communications > Modbus
Parameter
Value
Function
Communication –
OK
– Alarm
– Status for Modbus communication.
Internal
– None
– Master
– Slave
– Internal interface disabled.
– Master, used for Modbus pressure sensor.
– Internal interface as slave, designed for communication to BMS.
Internal slave adr.
0…247
Address of controller on the bus.
Internal settings
RS485
–
Go to parameter page for RS485 settings.
TCP/IP
–
Go to parameter page for TCP/IP settings.
Module 1 Modbus
–
Go to page for Modbus module settings.
Module 2 Modbus
–
Go to parameter page for Modbus module settings.
Module 3 Modbus
–
Go to parameter page for Modbus module settings.
Main index > System overview > Communications > Modbus > RS485
Parameter
Value
Function
Baud rate
– 2400
– 4800
– 9600
Å
DEFAULT
– 19200
– 38400
Bus transfer speed.
All units must have the same setting.
Parity
– Even
– Uneven
– None
Å
DEFAULT
Parity..
All units must have the same setting.
Stop bit
– One
Å
DEFAULT
– Two
Number of stop bits.
All units must have the same setting.
Delay time
– 0…2147483647 [ms]
– O mS
Å
DEFAULT
– Delay of response time to master.
Response timeout
– 0…2147483647 [ms]
– O mS
Å
DEFAULT
Setting of max response time for master.
Information must be read within this time; otherwise an alarm
will be triggered.
Termination
– Passive
Å
DEFAULT
– Active
Internal bus connection for controller:
– No bus connection resistance.
– With bus connection resistance.
Restart
–
9
– Execute
The controller must be restarted after changes are made in
order for the new settings to apply.
Detailed information about the MODBUS interface (transfer data, initiation, function) is
available in the document CB1P3934.
Note!
11.8
11.9
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