Tracking Block And Tracking Trigger - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

Tracking block and tracking trigger

The devices or labels of a specified range is transferred by setting a range of devices or labels to be transferred for each
tracking block and turning on the tracking trigger which is assigned for each tracking block.
Tracking block
A tracking block is used for setting a tracking transfer range of global devices and whether or not to transfer local devices/
global labels/local labels.
• Up to 64 blocks (No.1 to 64) are available.
• Up to 2048 devices can be set in a block. Up to 2048 devices can be transferred in a single tracking.
• The available capacity of tracking devices or labels is 1M words per block.
Ex.
When only the tracking block No.3 has no setting
Tracking Setting example
block No.
1
2
3 Not set
 
64
Global labels, local labels, and local devices are transferred only once in one scan. Even when the same
global labels, local labels, and local devices are specified in multiple tracking blocks, the overlap does not
affect the data capacity to be transferred.
28 FUNCTIONS
458
28.3 Tracking Transfer