User manual

72 UA964801 - User manual User manual - UA964801 73
Modbus RTU protocol features
Supported
functions
WORD READING (max  word) (x, x)
SINGLE WORD WRITING (x)
MULTIPLE WORDS WRITING (max  word) (x)
Looking at the table here below it is possible to nd all available addresses and
functions:
RO Read Only R/W Read / Write WO Write Only
Modbus
Address
Description
Read
Only
Reset
value
 Device type RO EEPROM
 Software version RO EEPROM
 Slave address R/W EEPROM
 Boot version RO EEPROM

Process (degrees.tenths for temperature sensors;
digit for linear sensors)
RO 

Min. peak (degrees.tenths for temperature sensors;
digit for linear sensors)
RO 

Max. peak (degrees.tenths for temperature sensors;
digit for linear sensors)
RO 

Peak-to-peak (degrees.tenths for temperature
sensors; digit for linear sensorsati)
RO 
 Totalizer value (H) RO EEPROM
 Totalizer value (L) RO EEPROM
 Sum value (H) RO EEPROM
 Sum value (L) RO EEPROM
 Cold junction temperature (degrees.tenths) RO EEPROM

Relays status ( = O,  = On):
Bit  = Relay
Q
Bit  = Relay Q
RO 
Modbus
Address
Description
Read
Only
Reset
value

Digital inputs status ( = O,  = Active):
Bit  =
D.I.
Bit  = D.I.
RO -

Keys status ( = released,  = pressed):
Bit  =
Bit  =
Bit  =
Bit  =
RO 

Error ags
Bit  = Cold junction error
Bit  = Process error (sensor)
Bit  = Eeprom writing error
Bit  = Eeprom reading error
Bit  = Missing calibration data error
Bit  = Generic error
Bit  = Hardware error
RO 

Alarms status ( = None,  = Active)
Bit  = Alarm 
Bit  = Alarm 
RO 

Manual reset: write  to reset all alarms.
In reading ( = Not resettable,  = Resettable)
Bit  = Alarm 
Bit  = Alarm 
R/W 
 Alarm  status (remote control) R/W 
 Alarm  status (remote control) R/W 
 mA analogue output value (remote control) R/W 
 Volt analogue output value (remote control) R/W 

Run by serial
 = Inhibited outputs
 = Active outputs
R/W 