Pixsys ATR142 - Page 21

21
Modbus RTU protocol features
Baud-rate
Can be selected on parameter 70
4800bit/sec
9600bit/sec
19200bit/sec
28800bit/sec
38400bit/sec
57600bit/sec
Format
8, N, 1 (8bit, no parity, 1 stop)
Supported
functions
WORD READING (max 20 word) (0x03, 0x04)
SINGLE WORD WRITING (0x06)
MULTIPLE WORDS WRITING (max 20 word)
(0x10)
The list below includes all the available addresses, where:
RO = Read Only
R/W = Read/Write
WO = Write Only
Modbus
address
Description Read
Write
Reset
value
0 Device type RO EEPROM
1 Software version RO EEPROM
5 Slave Address R/W EEPROM
6 Boot version RO EEPROM
50 Automatic addressing WO -
51 System code comparison WO -
1000 Process (with tenths of degree for temperature
sensors; digits for linear sensors)
RO ?
1001 Setpoint1 R/W EEPROM
1002 Setpoint2 R/W EEPROM
1003 Setpoint3 R/W EEPROM
1004 Setpoint4 R/W EEPROM
1005 Alarm1 R/W EEPROM
1006 Alarm2 R/W EEPROM
1007 Setpoint gradient RO EEPROM