HMS Networks Intesis EIA-485, Руководство пользователя, Страница: 8 / 20

Intesis TM INMBSMIT001I000
User’s Manual r22 EN
© HMS Industrial Networks S.L.U - All rights reserved
This information is subject to change without notice
URL https://www.intesis.com
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4. Modbus Interface Specification
4.1 Modbus physical layer
INMBSMIT001I000 implements a Modbus RTU (Slave) interface, to be connected to an EIA-485
line. It performs 8N2 communication (8 data bits, no parity and 2 stop bit) with several
available baud rates (2400 bps, 4800 bps, 9600 bps -default-, 19200 bps, 38400 bps, 57600
bps, 76800 bps and 115200 bps). It also supports 8N1 communication (8 data bits, no parity
and 1 stop bit).
4.2 Modbus Registers
All registers are type “1 6- bit unsigned Holding Register” and they use the standard Modbus big
endian notation.
4.2.1 Control and status registers
Register Address
(protocol address)
Register Address
(PLC address)
R/W Description
0 1 R/W
AC unit On/Off
▪
0:Off
▪
1:On
1 2 R/W
AC unit Mode 1
▪
0:Auto
▪
1:Heat
▪
2:Dry
▪
3:Fan
▪
4:Cool
2 3 R/W
AC unit Fan Speed 1
▪
0:Auto
▪
1:Low
▪
2:Mid-1
▪
3:Mid-2
▪
4:High
3 4 R/W
AC unit Vane Position 1
▪
0:Auto
▪
1:Horizontal
▪
2:Position-2
▪
3:Position-3
▪
4:Position-4
▪
Vertical
▪
Swing
4 5 R/W
AC unit Temperature Setpoint 1,2,3
▪
-32678 (Initialization value)
▪
16..32ºC (ºC/x10ºC)
▪
61..90ºF
5 6 R
AC unit Temperature reference 1,2,3
▪
-32678 (Initialization value)
▪
10..38ºC (ºC/x10ºC)
▪
50..100ºF
1 Available values will depend on the AC unit mode. Check the AC unit model functions in its User ’s M anual to know the possible values
for this register.
2 Magnitude for this register can be adjusted to Celsius x 1ºC, Celsius x 10ºC (Default) or Fahrenheit. See section 4.2.3 for more
information
3 It is not possible turn to x10 the value shown in Fahrenheit.