Delta DPM-MA1121, Руководство пользователя

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C h a p t e r 4 O p e r a t i o n s
4 - 1 3
4_
MODBUS
Address
Item Range
Data
Type
Unit BYTE
Read(R)/
Write(W)
Hex
Modicom
Format
21D 400542 0~59 word Minute 2 R / W
21E 400543 0~59 word Second 2 R / W
21F 400544 Logging enable
0: Disable
1: Enable
word 2 R / W
220 400545 Log 01
Parameter code see
table
4-1
word 2 R / W
221 400546 Log 02
Parameter code see
table 4-1
word 2 R / W
… … …
233 400564 Log 20
Parameter code see
table 4-1
word 2 R / W
234 400565 Log 21
Parameter code see
table 4-1
word 2 R / W
Set recorded parameters: you can set to record all parameters or record specified parameters.
Recording interval duration time: Can set any integer between 1 ~ 32767. Unit with the interval time, that is each data
record interval time
Record interval duration time unit: Can set the second, minute, hour, day.
Record period: Enable the data logging function to set the start time and end time. The time setting range is year, month,
day, hour, minute and second. When enabled, a data log is recorded for each record interval duration time between the
start time and the end time.
Note: Condition setting, recording function enable, etc. must be done before using the data logging function. Any
incomplete or incorrect settings will result in the recorded failure. The setting operation is completed by setting the
corresponding register. It should be specially explained that the settings of these registers must be set by means of
communication. After the record full, data will be based on first-in-first-out principle of circular coverage. When cyclic
overwriting occurs, the earliest recorded data will be overwritten sequentially. Therefore, user are advised to read and
save the entire data record before it is full to prevent data loss.
When the contents of the record parameters have changed, then all the records will not be retained and start recording
from beginning.
4.3.2 Data Log Read
Read data logs must be read via communication, see Table 4-3.
Table 4-3
MODBUS
Address
Item Range
Data
Type
Unit BYTE
Read(R)/
Write(W)
Hex
Modicom
Format
200 400513
Data length of record
value
0~999 word 2
R
201 400514
Number of unread datas
0~65535 word 2
R
202 400515
Log.read
Read the next record, if
no data returned error
code 0x20
word 2
R