Register Number Description; Automatic Value Conversion Range - Riello TAU Unit 50 Installation And Maintenance Manual

SYSTEM MANAGER
Register
Access Description
number
510 X X
511 X X
In the "Note" column, the registers marked with "V" can be
written on an ongoing basis (and be used for dynamic size con-
trol). Registers marked with "NV", on the other hand, can be
overwritten only for a limited number of times (around 10,000
times with an average of twice a day).
Service reminder
Access
Register
number
L S
1500 X
1501 X
33000 X
33001 X
STATUS table
Nr. Name
0 STANDBY
10 ALARM
14 BLOCK
15 FROST_PROTECT Frost protection on
16 CH_DEMAND
17 RESET_STATE
STORAGE_DE-
18
MAND
DHW_TAP_DE-
19
MAND
20 DHW_PRE_HEAT Pre-heating demand
STORE_HOLD_
21
WARM
GENERAL_
22
PUMPING
Auto-
matic
Note
conver-
sion
Minimum
value that
can be as-
NV Yes
signed to the
heating set-
point (Par. 23)
Night-time
attenuation NV Yes
(Par. 28)
Automatic
Description
conversion
Hours elapsed
from the last
maintenance
activity
Hours from the
next mainte-
nance activity
Hours elapsed
from the last
maintenance
activity
Hours from the
next mainte-
nance activity
Description
Standby
Non-volatile lockout error
Volatile lockout error
Heat demand
Reset
DHW demand
Imm. DHW demand.
Holding desired storage temperature
General pump ON
STATE table
Nr.
Value
range
0 RESET_0
1
2 STANDBY_0
Depends
on °C/°F
3 PRE_PURGE
units
4 PRE_PURGE_1
Depends
5 SAFETY_ON
on °C/°F
6 SAFETY_OFF
units
7
8
9 BURN_0
SHUT_DOWN_
10
RELAY_TEST_0
Value
range SHUT_DOWN_
11
RELAY_TEST_1
0...65534
12 POST_PURGE_0
hours
13 POST_PURGE_1
14 PUMP_CH_0
.. 0...2000
15 PUMP_CH_1
0...65534
16 PUMP_HW_0
hours
17 PUMP_HW_1
18 ALARM_1
.. 0...2000
19 ERROR_CHECK
20 BURNER_BOOT
CLEAR_E2PROM_
21
STORE_BLOCK_
22
23 WAIT_A_SECOND Waiting before entering another state
133
Name Description
Initialisation of reset variables
RESET_1 Reset
Standby
Initialisation of pre-purging variables
Pre-purging
ON safety relay test
OFF safety relay test
IGNIT_0 Initialisation of ignition variables
IGNIT_1 Start-up
The module is ON
Initialisation of variables to check
safety devices and gas valve
Safety and gas valve test relay
Initialisation of post-purging varia-
bles
Post-purging
Initialisation of heating pump varia-
bles
Heating pump
Initialisation of DHW pump variables
DHW pump
Non-volatile lockout error
Volatile lockout error
Restart of board
Cancel error E2PROM
ERROR
Save error
ERROR
MODBUS CONNECTION