32 - ATR144 - User manual
Modbus RTU protocol features
Format
Selectable on parameter 152 s . S. p . F.
8N1 8N2
8E1 8E2
8O1 8O2
Supported
functions
WORD READING (max 50 word) (0x03, 0x04)
SINGLE WORD WRITING (0x06)
MULTIPLE WORDS WRITING (max 50 word)
(0x10)
Here below a list of all available addresses and supported
functions:
RO = Read Only R/W = Read/Write WO = Write Only
Modbus
address
Description
Read
Write
Reset
value
0 Device type RO 47x
1 Software version RO Flash
2 Boot version RO Flash
3 Slave Address RO Eepr/dip
6 Baud rate RO Eepr/dip
50 Slave address automatic learning WO -
51
System code comparison for slave
address automatic learning
WO -
500 Loading default values (write 9999) RW 0
501 Restart ATR144 (write 9999) RW 0
502 Setpoint storing delay time RW 10
503 Parameters storing delay time RW 1
701
First character of the custom alarm
message 1
RW “u“
... RW -
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