S&A RMUP-300 - Page 10

RMUP-300 Series
10
<6> MODBUS RS-485 communication
function
This system adopts MODBUS-RTU communication slave mode, baud rate
9600, no parity, 8 data bits, 1 stop bit, and supports MODBUS-RTU command.
Function
code
(decimal)
Parameter
address
(decimal)
Description
Value
range
Remarks
Attributes
01
00000
Output switching
value
Bit0: alarm
R
Bit1: electric heating
Bit2: compressor
Bit3: heating valve
Bit4: cooling valve
02
10000
Input switching
value
Bit0: flow switch
R
Bit1: multi-purpose input
03/06/16
40015
Restore factory
default
1
*1
W
40025
System status
0x01: standby
R/W
0x02: power on
0x03: fault
40029
Error code
0: normal and no fault
R
1: ambient temperature sensor
failure
2: media temperature sensor failure
8: power failure
9: power reverse phase protection
10: liquid level protection
13: flow protection
16: pump overload
17: flow lower limit protection
18: compressor overload
33: abnormal system operation
45: temperature upper limit alarm
54: lower temperature limit
alarm
40030
System uptime
Unsigned integer
*1
R
40034
Press uptime
Unsigned integer
*1
R
40037
Local address
1~125
*1
R/W
04
30000
Media
temperature
*10
R
30001
Media traffic
*10
30002
Ambient
temperature
*10