Mitsubishi Electric MELSEC-L Series - Wiring

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(1) Condition specification
A trigger occurs when the state of the specified device or step meets the specified condition.
(a) Condition change specification
A trigger occurs when the specified device condition is met. Select one from the following.
• When the bit of the bit device rises: When the specified device is turned on
• When the bit of the bit device falls: When the specified device is turned off
• When the word device value meets the specified value: A trigger occurs when the data that match the
specified value are written, regardless of the current value status of the specified device (match or not
match with the specified value).
• When data are written to a word device: When data are written to the specified device
The following devices can be specified as trigger conditions.
*1 T (contact), ST (contact), and C (contact) are specified with TS, SS, and CS respectively.
For the above devices, index modification and indirect specification are not available.
Type Description
Bit device
X, Y, M, L, F, SM, V, B, SB, T (contact)
*1
, ST (contact)
*1
, C (contact)
*1
, FX, FY
Bit specification of word device: D, D (extended data register), SD, W, W (extended link register), SW, R, ZR, FD
Word device
T (current value), ST (current value), C (current value), D, D (extended data register), SD, W, W (extended link register),
SW, R, ZR, FD