Iskra WM3M4 - Page 41

DIGITAL SIGNATURE (VALID ONLY FOR WM3M4C)
User’s Manual WM3M4 &WM3M4C
35
6.5.3 Signature status register (47052)
Value
Description
0
Not initialised
1
Idle
2
Signature in progress
15
Signature OK
128
Invalid date time
129
CheckSum error
130
Invalid command
131
Invalid state
132
Invalid measurement
133
Test mode error
243
Verify state error
244
Signature state error
245
Keypair generation Error
246
SHA failed
247
Init failed
248
Data not locked
249
Config not locked
250
Verify error
251
Public key error
252
Invalid message format
253
Invalid message size
254
Signature error
255
Undefined error
Table 11: Signature status register
6.5.4 Setting time related registers
Control unit can set time, time sync status, time sync status timeout, UTC offset and UTC / local time
presentation.
Time changing is not possible during charging!
One time adjustment (+-3 seconds) is permitted during charging.
Setting time 6.5.4.1
Write unix timestamp to MODBUS registers 47054 - 47055.
47054 : high 16 bits
47055 : low 16 bits
Example:
Unix time: 1570096309 hex:0x5D95C4B5
Write 0x5D95 to 47054
Write 0x C4B5 to 47055
The best practice is to set time at start of every charging procedure.