Watchdog Function - LU-VE Emeritus LU1W Manual De Usuario

18.1 Watchdog function

With parameter PH27, you can enable or disable activation of the remote supervisor setting. Therefore, it is possible
to restart the unit even with the remote supervisor out of service.
Parameter PH28, on the other hand, enables a controller management mode (called "supervisor DI management") for
which:
•
the values of the digital inputs are "forced" by writing MODBUS of parameters Pk21-Pk31 (without the need
to enable forcing through the Pd parameters)
•
Watchdog functionality is enabled.
With active watchdog, the remote supervisor must periodically initialize the dedicated "cntBMS_DI" counter. In case
of initialization, if the counter reaches the time set to PH29 (in minutes), the automatic forcing of the digital inputs is
disabled.
Moreover, when the "cntBMS_DI" counter reaches PH29 minutes, the activation/standby via BMS is also bypassed,
and can proceed with the activation/standby mode via display or physical digital input.
With supervisor-enabled DI management, you cannot force digital inputs from display.
PARAMETER
NAME
PH27
Enable On/Off from supervisor
Enable "supervisor DI
PH28
management"
Delay disabling "supervisor DI
PH29
management"
MODBUS Registers
MODBUS MODBUS
Register Register Name and Description
Base 0 Base 1 Parameter
PH27
Enable On/Off from
0x083E 2111 Supervisor
PH28
Enable "Supervisor DI
0x083F 2112 Management"
PH29
Delay disabling
0x0840 "supervisor DI
Invalid 2113 management"
cntBMS_DI
Timer for disable
"Supervisor DI
0x05CC 1485 Management"
LU1W - User Manual
DESCRIPTION
Data Type and Notes
0 = disabled,
1 = enabled
- unsigned short int
0 = disabled,
1 = enabled
- unsigned short int
[min]
- unsigned short int
[min]
- unsigned short int
DEFAULT MIN
VALUE VALUE
Yes No
No No
10 1
Default
value
1
0
10
0
110
MAX
UM
VALUE
-
Yes
-
Yes
min
255
Decimal
min Max positions
0 1
0 1
1 255
0 255
REV.1.1 – 07/11/2017 - ENG
MENU
ADVANCED →
VARIOUS
ADVANCED →
VARIOUS
ADVANCED →
VARIOUS
MODBUS
Register
Type
0 holding
0 holding
0 holding
0 holding