Daikin FWP-AT - Инструкция по эксплуатации - Страница 48

FC66003946
Rev 00

USER MANUAL

It is strictly forbidden to reproduce this manual, even par tially

EN

16

FWECSA

Controller for units

NETWORKS AND CONNECTIVITY

CONNECTION TO SUPERVISION SYSTEM 

(EXTERNAL  SUPERVISOR  SYSTEM 

SOLUTION)

Connection is possible for version External  
Supervisor  System 3.10 or higher.

Using serial por t RS485 it is possible to connect FWECSA 
controllers (up to 247) to a management software that uses 
standard MODBUS RTU as a communication protocol, with 
the following characteristics:

• 

settable baudrate (defualt: 9600);

• 

no parity

• 

8 bits of data

• 

1 bit of stops

Inside a supervision network, each FWECSA controller acts 
as a SLAVE towards the centralised management system 
which constitutes the network MASTER 

(figure 01)

.

Once the network has been wired, it is necessary to configure 
each FWECSA controller. Press PRG to access the MENU 
and then enter sub-menu “Networks and connections” 
(password = 20). Set the SETUP RS485 parameters as 
follows:

• 

MST/SLV

 = “Slave from SPV”

• 

Protocol

 = “Modbus”

• 

Serial address

 = set a value between 1 and 255

• 

Speed

 = set based on the requirements of the Master

leave the SETUP OC PARAMETERS UNCHANGED (MST/SLV 
= none).

For details on how to wire the network, read 
“RS485 NETWORK GUIDE LINES” available in 
the download area of the Daikin website.

The following functions are recognised and managed by the 

controller as SLAVE:

CODE

DESCRIPTION

01

coil status reading

02

input status reading

03

holding register reading

04

input register reading

15

multiple coil status writing

16

multiple holding register writing

The following are the available variables: 

COIL STATUS 

(DIGITAL READING/WRITING)

DESCRIPTION

1

ON/OFF controller

2

SUMMER/WINTER controller

3

ECONOMY controller 

4

ENABLE ANTI-FREEZE controller 

5

ENABLE ELECTRICAL HEATER controller

6

modulating ventilation MAN/AUTO controller

7

enable ON/OFF from MASTER

8

enable ECONOMY from MASTER

9

enable SUMMER/WINTER from MASTER

10

enable ANTI-FREEZE from MASTER

11

enable ELECTRIC HEATERS from MASTER

12

enable SETPOINT from MASTER

13

enable SETPOINT LIMITS from MASTER

14

enable VENTILATION SPEED from MASTER

15

KEYBOARD LOCK controller 

16

enable HUMIDITY CONTROL consent from MASTER

17

enable HUMIDITY CONTROL

18

control for CONFIGURABLE DIGITAL OUTPUT NO.7