REMKO SLN 45, Operating And Installation Instructions

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RS-485 interface
Register Byte
Database
parameters
Min Max Hr. Description
2
2 Comp_state 0 1 0
Compressor status:
0 – Compressor stopped 1 – Compressor running
3 Fan_state 0 1 0
Fan status:
0 – Fan stopped 1 – Fan running
3
4 Sole_state 0 1 0
Solenoid valve:
0 – closed
1 – open
5 ExFan_state 0 1 0
Extractor fan status:
0 – Fan stopped
1 – Fan running
4
6 Heat1_state 0 1 0
Status HEAT 1:
0 – HEAT 1 off
1 – HEAT 1 on
7 Heat2_state 0 1 0
Status HEAT 2:
0 – HEAT 2 off
1 – HEAT 2 on
5
8 Alarm1_state 0 1 0
Output alarm 1:
0 – Alarm output off
1 – Alarm output on
9 Alarm2_state 0 1 0
Output alarm 2:
0 – Alarm output off
1 – Alarm output on
6
10
Evap_temp1
(decimal)
-40 100 0
Temperature of evaporator 1:
Decimal: Can be used as an integer value for
temperature.
Fraction: Can be converted to a decimal value.
To obtain the total value, use the equation for
floating-point numbers: “Value = d
(fraction/256)”.
11
Evap_temp1
(fraction)
-40 100 0
7
12
Evap_temp2
(decimal)
-40 100 0
Temperature of evaporator 2:
Use as described above.
13
Evap_temp2
(fraction)
-40 100 0
The RS-485 interface uses the Modbus RTU protocol as a slave unit. The unit does not have an address.
Settings: 115200, N, 8, 1. It accepts queries for any address.
Code functions
0x06 Present single register
0x10 Present multiple register
0x03 Read holding register
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