Riello UPS MultiCOM 401 - Manual (Page 15)

15
P
ERMANENT
PZD
CONFIGURATION
PZD configuration can be stored to non-volatile memory and automatically restored at the gateway
power up. For this purpose the internal gateway parameter 802 is provided. By writing to this
parameter the permanent storage of the PZD configuration is controlled. The possible values to be
written to this parameter are:
0 → none
1 → clear non-volatile PZD setting
2 → store the current PZD setting to non-volatile memory
3 → restore the PZD settings from non-volatile memory
The PZD setting saving is executed on the transition of the value of the parameter 802. To
generate this transition firstly store 0 to this parameter and then the desired value.
Ones that there are stored PZD settings in non-volatile memory, the function 3 (restore) is
automatically executed at the gateway power up. In order to stop this auto-initialization the value 1
has to be written to parameter 802.
EXAMPLES
Store PZD setting to non-volatile memory:
Word 0 Word 1 Word 2 Word 3
Output: 0x2322 xxxx xxxx 0x0002
Must be 0 before.
So write 2 and after 0
Word 0 → Index used 0x322 (802dec)
Word 3 → Value = 2 (store the current PZD setting to non-volatile memory)
Reset PZD setting to non-volatile memory:
Word 0 Word 1 Word 2 Word 3
Output: 0x2322 xxxx xxxx 0x0001
Must be 0 before.
So write 1 and after 0
Word 0 → Index used 0x322 (802dec)
Word 3 → Value = 1 (clear non-volatile PZD setting)