Omron NX701-17 Series User Manual page 135

CPU Unit
NX-series
NJ-series
*1 If multiple tasks are assigned, the longest task period is used for calculation.
*2 The Slave Sync Manager WDT error detection time is the time from when the last process data is received
until a reception error is detected.
Precautions for Correct Use Precautions for Correct Use
You cannot obtain current errors from slaves after a major fault occurs except for those in Ether-
CAT Slave Terminals.
Additional Information
When a major fault level Controller error occurs, the related system-defined variables have the
following values.
 For NX701 CPU Units
_EC_InData1Invalid = TRUE
_EC_InData2Invalid = TRUE
_EC_PDSlavTbl[] = FALSE
_EC_MBXSlavTbl[] = Values before operation stopped
 For NJ-series CPU Units and NX1P2 CPU Units
_EC_InDataInvalid = TRUE
_EC_PDSlavTbl[] = FALSE
_EC_MBXSlavTbl[] = Values before operation stopped
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (W505)
6 Process Data Communications and SDO Communications
Formula
PDO communications timeout detection count × Task
period of the task assigned to slave
Slave Sync Manager WDT error detection time (100
*2
ms) + Communications cycle (4 ms max.) + Margin
The result given from the left for-
*1 mula.
+ 10 ms
The maximum time is 100 to 110
ms if the calculation result is 110
ms or less.
110 ms
Maximum time
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