Mitsubishi Electric Melsec Q Series User Manual page 56

3
SPECIFICATIONS
(11) Alarm read request signal (Y18), Alarm read response signal (X18)
Remark
3
- 15 3.3 Input/Output Signals to/from Programmable Controller CPU
3.3.2 Details of I/O signals
(a) Turn ON the Alarm read request signal (Y18) when reading alarms on the
specified DP-Slave according to the information set in the Alarm request area
(Un\G26432 to Un\G26434).
(b) Turning ON the Alarm read request signal (Y18) clears the information in the
Alarm response area (Un\G26446 to Un\G26768).
Note, however, that the information in the following areas are not cleared when
the alarm ACK request (request code: 1501
Table3.7 Areas Not Cleared At Alarm ACK Request Execution
Buffer Memory Address
DEC (HEX)
26449 to 26484
(6751 to 6774 )
H H
26489 to 26524
(6779 to 679C )
H H
26529 to 26564
(67A1 to 67C4 )
H H
26569 to 26604
(67C9 to 67EC )
H H
26609 to 26644
(67F1 to 6814 )
H H
26649 to 26684
(6819 to 683C )
H H
26689 to 26724
(6841 to 6864 )
H H
26729 to 26764
(6869 to 688C )
H H
(c) The Alarm read response signal (X18) turns ON when alarms on the specified
DP-Slave are read, and the execution result is stored to the Alarm response area
(Un\G26446 to Un\G26768).
(d) Read the alarm information from the Alarm response area (Un\G26446 to
Un\G26768), and turn OFF the Alarm read request signal (Y18).
(e) Turning OFF the Alarm read request signal (Y18) turns OFF, the Alarm read
response signal (X18).
For details on acquisition of alarms, refer to Section 4.2.2.
) is executed:
H
Area to which alarm data of alarm data No.1 is stored
Area to which alarm data of alarm data No.2 is stored
Area to which alarm data of alarm data No.3 is stored
Area to which alarm data of alarm data No.4 is stored
Area to which alarm data of alarm data No.5 is stored
Area to which alarm data of alarm data No.6 is stored
Area to which alarm data of alarm data No.7 is stored
Area to which alarm data of alarm data No.8 is stored
Description