User`s manual
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MELSEC-Q
9 CONTROL OPERATION INSTRUCTIONS
Processing contents
(1) The S.DED instruction performs the following operation.
e1 OCHG Dead time BW
1 0/1 None E1
Up to SN
times
E1 when e1 turns from 1 to 0
0
Later than
SN times
Oldest data
*1
Up to SN
times
Y
S
1 0
1
ST SN
Later than
SN times
Oldest data
*1
0 00/1ST
SN Oldest data
*1
*1: The oldest date is the E1 after the SNth time.
• When the dead time table date is not filled, BB1 is turned 1.
• When SN 0, BB1 0 and BW E1.
Error
• When an operation error occurs Error code: 4100
• When the sampling count is other than 0 to 48 Error code: 4100










