Daikin FWP-AT - Инструкция по эксплуатации - Страница 51

EN

19

OPERATION MANUAL

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

FC66003946

Rev 00

Controller for units

FWECSA

SETUP parameters as follows:

• 

MST/SLV

 = set “Master” on the I/O board acting as 

the MASTER of the network and “Slave” on all of the 
SLAVEs in the network.

• 

Serial address

 = set a value between 2 and 34 on the 

SLAVE controllers.

It is now possible to connect all of the I/O boards to the 
network.

Once the board has been set as SLAVE, it can 
no longer communicate with any random user 
unit. Accordingly, if the settings are changed, it 
will be necessary to RESET it in the following 
manner: disconnect the board from the 
network and, keeping it powered, place digital 
input 10 in short circuit for 15 seconds (clamps 
I10 and IC).

All of the hydronic units (i.e. both MASTER 
and SLAVE) connected to the network must be 
configured in the same way.

MIXED NETWORK

The SMALL network on CONVEYED WAVES can also be 
connected to a supervision network (External  Supervisor  
System or SMALL solution) on RS485 through RS485 serial 
por t of the MASTER controller, thus obtaining what is known 
as a MIXED NETWORK. 

Figure 04

 illustrates the diagram 

of a mixed network comprised of a SMALL network on 
CONVEYED WAVES combined with a supervision network.

PARAMETER OUTLINING TABLE

EXTERNAL  

SUPERVISOR  

SYSTEM

BMS

SMALL 

RS485

SMALL

OC

Mixed

Network

RS485

MST/SLV

Slave from 

SPV

FWECSA 

Master: 

Master

-

FWECSA 

Master: 

Master

FWECSA 

Slave: Slave 

from SPV

FWECSA 

Slave: Slave 

from SPV

Protocol

Modbus

Modbus

-

Modbus

Serial Address

1... 255

FWECSA 

Master: 0

-

FWECSA 

Master: 0

FWECSA 

Slave: 1... 

255

FWECSA 

Slave: 1... 

255

Speed

Based on the 

Master

9600

-

9600

OC

MST/SLV

-

-

FWECSA Master: Master

FWECSA Slave: Slave

Serial Address

-

-

FWECSA Master: 0

FWECSA Slave: 2... 255

MEANINGS OF THE LEDS

BLUE

GREEN 

RED

STATUS

LED

Unit OFF

Unit ON

Alarm in 

progress

NETWORK 

LED

OC Master

Communication 

OK

No 

communication

Looking at the I/O board from the front, the 
STATUS LED is on the left, while the NETWORK 
LED is on the right.