Mitsubishi MELSEC Q series User Manual page 55

<Data are collected only when the status is changed.>
Device data are collected only in the END processing of the scan where the specified device condition is
changed. Set 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 data is changed: When the current value of the specified device is changed
Ex.
When the word device data is changed
Word device Specified value =
value 0 (initial value)
0 END
Program
END processing
1 scan
The following devices can be specified as device data conditions.
Type
Bit device
Word device
*1 The built-in I/O function does not support the U\G specification.
*2 Digit specification of bit device is available only for K1 to K4.
*3 T (contact), ST (contact), and C (contact) are specified with TS, SS, and CS respectively.
*4 Before specifying the device, check the versions of the CPU module and configuration tool used. ( Page 190,
Appendix 2)
*5 The LCPU does not support this item.
For the above devices, the following modification is available.
• Indirect specification
• Index modification (except for FX, FY, FD, BL\S, and bit specification of word device)
Specified value = 1
0 END 0
END processing
Sampling
X, Y, M, L, F, SM, V, B, SB, T (contact)
*4 *4 *4 *5
J\X , J\Y , J\SB , J\B
Bit specification of word device:
D, D (extended data register), SD, W, W (extended link register), SW, R, ZR, FD, U\G
*4 *4 *5
J\W , J\SW , U3E\G
T (current value), ST (current value), C (current value), D, D (extended data register), SD, W, W (extended link
*1
register), SW, R, Z, ZR, FD, U\G , J\W
*2
Digit specification of bit device :
X, Y, M, L, F, SM, V, B, SB, BL\S, J\X
CHAPTER 6 DATA LOGGING FUNCTION
END 0 END
END processing END processing
Data are not sampled because the status did not change
after the previous sampling.
Description
*3 *3 *3
, ST (contact) , C (contact) , FX, FY, BL\S,
*4 *4 *5
, J\SW , J\B
*4 *4 *4 *5
, J\Y , J\SB , U3E\G
Specified value = 2
0 END
END processing
Sampling
*1
,
53
6