Delta AH500 - Page 106

Chapter 2 Devices
2-87
Number
Action
number
*Time when the PLC status change action occurs
Year
Month
Day
Hour
Minute
Second
High byte
Low byte
High byte
Low byte
High byte
Low byte
16 SR371
SR372
High byte
SR372
Low byte
SR373
High byte
SR373
Low byte
SR374
High byte
SR374
Low byte
17 SR375
SR376
High byte
SR376
Low byte
SR377
High byte
SR377
Low byte
SR378
High byte
SR378
Low byte
18 SR379
SR380
High byte
SR380
Low byte
SR381
High byte
SR381
Low byte
SR382
High byte
SR382
Low byte
19 SR383
SR384
High byte
SR384
Low byte
SR385
High byte
SR385
Low byte
SR386
High byte
SR386
Low byte
20 SR387
SR388
High byte
SR388
Low byte
SR389
High byte
SR389
Low byte
SR390
High byte
SR390
Low byte
*Time when the PLC status change action occurs: The data is stored as the values in the
binary-coded decimal. The range of values is as follows.
Function
Value
Year
00~99 (A.D.)
Month
01~12
Day
01~31
Hour
00~23
Minute
00~59
Second
00~59
9. The PLC operation flag
 SM400~SM403
SM400: The flag is always ON when CPU runs.
SM401: The flag is always OFF when CPU runs.
SM402: The flag is ON only at the first scan. The pulse width equals one scan time. Users
can use this contact to do the initial setting.
SM403: The flag is OFF only at the first scan. That is, the negative pulse is generated the
moment the PLC runs.
The PLC runs.
SM400
S
M401
SM402
SM403
Scan time