ATR 421 - User manual 31
Modbus
address
Description
Read
Write
Reset
value
1002 Setpoint (with gradient) RO 0
1003 Setpoint with process decimal point selection RO 0
1004
Digital input status
0 = input OFF 1 = input ON
RO 0
1005
Relay status (0=o , 1=on)
Bit 0 = relay
Q4 Bit 3 = relay Q2
Bit 1 = relay Q3 Bit 4 = relay Q1 n.c.
Bit 2 = relay Q1 n.o. Bit 5 = SSR
RO 0
1006 Heating output percentage (0-10000) RO 0
1007 Cooling output percentage (0-10000) RO 0
1008 Heating output percentage (0-1000) RO 0
1009 Cooling output percentage (0-1000) RO 0
1010 Heating output percentage (0-100) 0
1011 Cooling output percentage (0-100) RO 0
1012
Alarms status (0=none, 1=active)
Bit0 = Alarm 1 Bit2 = Alarm 3
Bit1 = Alarm 2 Bit3 = Alarm 4
RO 0
1013
Error ags
Bit0 = Eeprom writing error
Bit1 = Eeprom reading error
Bit2 = Cold juntion error
Bit3 = Error AI1 (sensor 1)
Bit4 = Error AI2 (sensor 2 - potentiometer)
Bit5 = Generic error
Bit6 = Hardware error
Bit7 = Missing calibration error
Bit8 = Eeprom cycle reading error
Bit9 = Not calibrate feedback potentiometer error
RO 0
1014 Cold juntion temperature (degrees with tenth) RO -
1200
Cycle selection for remote start
1 = cycle1
…
15 = cycle15
16 = controller
17 = output manual control
R/W 1