Configuration Registers; Considerations On Temperature Registers - Intesis IntesisBox FJ-AC-MBS-1 User Manual

ModBus RTU – Fujitsu
®
IntesisBox
Register Address
(protocol address)
66
97
98

4.2.2 Configuration Registers

Register Address
(protocol address)
13
14
15
21
49
50
99

4.2.3 Considerations on Temperature Registers

•
AC unit Temperature Setpoint (R/W) (register 5 – in PLC addressing): This is the adjustable temperature
setpoint meant to be required by the user. This register can be read (Modbus function 3 or 4) or written
(modbus functions 5 or 16). A remote controller connected to the 3-wire bus of the Fujitsu indoor unit will
report the same temperature setpoint value as this register.
•
AC unit external reference temperature (R/W) (register 23 – in PLC addressing): This register allows
providing an external temperature reference from Modbus side. If an external temperature is provided
through this register, indoor unit will use it as reference for its temperature control loop.
This register will have no effect in those Fujitsu RAC / domestic line splits Air-Conditioning units –
o
this is, those models requiring an additional communication accessory enabling communication with
FJ-AC-MBS-1.
o
For this temperature to take effect it is required that the Fujitsu AC indoor unit is configured in such
a way that it uses the "thermostat sensor in the remote controller" (this is, FJ-AC-MBS-1 will act as
thermostat sensor providing a temperature sensor reading).
7 If the register is configured as "0:Non-blocked", all commands received from Modbus will be sent to the AC system. If "1: Blocked", commands from Modbus will only
be sent to the AC system if they differ from the previous value.
8
Once window contact is open, a count-down to switch off the AC Unit will start from this configured value.
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This information is subject to change without notice
®
IntesisBox is a registered trademark of Intesis Software SLU
Register Address
(PLC address)
67
98
99
Register Address
(PLC address)
14
15
16
22
50
51
100
R/W Description
▪ 0x8000: No temperature's value is being provided from
an external sensor. No virtual temperature is being
applied.
▪
Any other: (ºC/x10ºC/ºF)
Return path temperature
R ▪
-32768 (Initialization value)
▪
Ranges are specific from Manufacturer
Block Periodic Sendings
R/W ▪
0: Non-blocked (Default value)
▪
1: Blocked
Master/Slave (gateway's role)
R ▪
0: Slave
▪
1: Master
R/W Description
"Open Window" switch-off timeout
R/W ▪
0..30 (minutes)
▪
Factory setting: 30 (minutes)
Modbus RTU baud-rate
▪
2400bps
▪
4800bps
▪
9600bps (Default)
R
▪
19200bps
▪
38400bps
▪
57600bps
▪
76800bps
▪
115200bps
Modbus Slave Address
R
▪
1..63
R Max number of fan speeds
R Device ID: 0x0D00
R Software version
Reset
W
▪
1: Reset
User Manual r1.0 EN
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