Ny-Series Instructions Reference Manual (W560 - Omron NY532-5400 Reference Manual

Related System-defined Variables
Name
_EC_MBXSlavTbl[i] Message Communica-
tions Enabled Slave Table
"i" is the node address.
_NXB_UnitMsgActiveTbl NX Unit Message Enabled
[i] Status
Precautions for Correct Use
• Execution of this instruction is continued until processing is completed even if the value of Execute
changes to FALSE or the execution time exceeds the task period. The value of Done changes to
TRUE when processing is completed. Use this to confirm normal completion of processing.
• Refer to Using this Section (page 2-3) for a timing chart for Execute, Done, Busy, and Error.
• If you specify a Unit that is assigned to a motion control axis (data type _sAXIS_REF) for UnitProxy,
a Controller error will occur in the Motion Control Function Module. If that occurs, use the Reset-
MCError instruction (page 2-822) to reset the Controller error.
• For UnitProxy, specify the device variable that is assigned to the EtherCAT Coupler Unit, an NX Unit
on the EtherCAT Coupler Unit, or an NX Unit connected to the NX bus of the CPU Unit in the I/O Map
of the Sysmac Studio. Refer to the Sysmac Studio Version 1 Operation Manual (Cat. No. W504-E1-
07 or later) for details on assigning device variables.
• If the NX_ChangeWriteMode instruction is executed during execution of another NX_ChangeWrite-
Mode instruction or execution of the RestartNXUnit instruction (page 2-836), the RestartNXUnit
instruction that is executed later will be queued. Up to 192 instructions can be queued. A building
error will occur if an attempt is made to queue more than 192 instructions. The time that an instruc-
tion is queued is not included in the timeout time.
• The value of Busy is TRUE while the instruction is queued.
• This instruction is related to NX Message Communications Errors. If too many instructions that are
related to NX Message Communications Errors are executed at the same time, an NX Message
Communications Error will occur. Refer to A-3 Instructions Related to NX Message Communications
Errors) for a list of the instructions that are related to NX Message Communications Errors.
• You cannot execute this instruction during execution of the following instructions: EC_Disconnect-
Slave, EC_ConnectSlave,
NX_ChangeWriteMode. An error will occur if you attempt to execute it.

NY-series Instructions Reference Manual (W560)

Meaning Data type
BOOL
BOOL
EC_ChangeEnableSetting,
2 Instruction Descriptions
Description
This variable indicates whether communications are
possible for each slave.
TRUE: Communications are possible.
FALSE: Communications are not possible.
This table indicates the slaves that can perform
message communications.
Use this variable to confirm that communications
with the relevant slave are possible.
ResetECError, RestartNXUnit, and
2-845
2