Command number 24: read alarm logs – Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 User Manual
Page 313

Publication 1758-UM002D-EN-P - October 2010
Extension Modbus Protocol for DataSite Controllers (1758-FLO) 313
Command Number 24: Read Alarm Logs
Use command number 24 to read alarm logs for up to 15 alarms at a time.
Each alarm consists of 12 registers.
The following table lists the register addresses for alarms 2…15. The data type
and attribute of each register are the same as those of the corresponding
register for alarm 1
Parameters for command number 24
Address
Data Type
Attribute
Description
49025
u_short
RW
24
49026
u_short
R
Return code
0: OK
49027
u_short
W
Reserved
49028
u_int
W
Pass code for user
49030
u_short
W
Start date index (0…299)
49031
u_short
W
Number of records you want to
get (1…15)
49032…49034
—
—
Reserved
Registers for alarm 1
Address
Data Type
Attribute
Description
49035
u_short
R
Alarm ID
49036
u_short
R
Alarm type
49037
u_char
R
Year
u_char
R
Month
49038
u_char
R
Day
u_char
R
Hour
49039
u_char
R
Minute
u_char
R
Second
49040
u_short
R
Variable address
49041
float
R
Value
49043…49046
u_short
R
Reserved[4]
Registers for alarms 2…15
Address
Data Type
Attribute
Description
49047…49058
See above
See above
Alarm 2
49059…49070
See above
See above
Alarm 3
49071…49082
See above
See above
Alarm 4