Omron NX701-17 Series User Manual page 176

9 Troubleshooting
Checking with System-defined Variables
You can use system-defined variables to check for errors in the EtherCAT Master Function Module.
 Error Status Variables
You can check for errors in each function module of the NJ/NX-series Controller with error status
variables. The following variables show the error status of the EtherCAT Master Function Module.
Variable name
_EC_ErrSta
_EC_PortErr
_EC_MstrErr
_EC_SlavErr
_EC_SlavErrTbl
*1 "n" is 512 for an NX-series CPU Unit and 192 for an NJ-series CPU Unit.
The meanings of the individual bits in the above error status variables are given below.
Bit
15
14
8 to 13
7
6
5
4
0 to 3
*1 For the EtherCAT Master Function Module, only _EC_SlavErrTbl (Slave Error Table) is used.
*2 For the EtherCAT Master Function Module, only _EC_ErrSta (Built-in EtherCAT Error) is used.
 Other System-defined Variables Related to Errors
For the EtherCAT Master Function Module, there are other system-defined variables that show error
status in addition to the error status variables. Refer to 7-1-2 System-defined Variables for system-
defined variables that are related to errors.
9-6
Data type Meaning
WORD Built-in EtherCAT
Error
WORD Communications
Port Error
WORD Master Error
WORD Slave Error
ARRAY[1..n] OF Slave Error Table
*1
WORD
Name
This bit indicates whether the master
*1
Master Detection
detected an error in the slaves that it
manages.
Indicates whether there is an error at
*2
Slave Summary
a level below the function module.
Reserved.
Major Fault Indicates if there is a major fault level
error.
Partial Fault Indicates if there is a partial fault level
error.
Minor Fault Indicates if there is a minor fault level
error.
Observation Indicates if there is an observation
level error.
Reserved.
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (W505)
Function
Gives the collective error status of all error sta-
tus for the EtherCAT Master Function Module.
Gives the collective error status of all error sta-
tus for the EtherCAT communications port.
Gives the collective error status of the EtherCAT
master error status and slave error status
detected by the EtherCAT master.
Gives the collective error status of the error sta-
tus for all EtherCAT slaves.
Gives the error status for each EtherCAT slave.
Description
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
Value Meaning
Error
No error
Error
No error
Error
No error
Error
No error
Error
No error
Error
No error