Task Design; General Communications; Ethernet/Ip Communications; Ethercat Communications - Omron SYSMAC NY Series Hardware User Manual

Task Design

• If the following variables are specified for a condition expression when the execution condition is a
condition expression for a variable, event tasks may not be executed when conditions are met or
event tasks may be executed when conditions are not met:
• Structure members whose data size is 16 bits or more, except for system-defined variables for
motion control.
• Array elements whose data size is 16 bits or more.
For information on event task execution conditions, refer to the NY-series IPC Machine Controller
Industrial Panel PC / Industrial Box PC Software User's Manual (Cat. No. W558).

General Communications

• Unexpected operation may result if inappropriate data link tables are set. Even if appropriate data
link tables have been set, confirm that the controlled system will not be adversely affected before
you transfer the data link tables. The data links start automatically after the data link tables are
transferred.
• Separate the machine network segment from the office network to avoid communication failures.

EtherNet/IP Communications

• Make sure that the communications distance, number of nodes connected, and method of connec-
tion for EtherNet/IP are within specifications. Do not connect EtherNet/IP communications to Ether-
CAT or other networks. An overload may cause the network to fail or malfunction.
• All related EtherNet/IP nodes are reset when you transfer settings for the built-in EtherNet/IP port
(including IP addresses and tag data links settings). The settings can only be enabled after the re-
set. Confirm that the system will not be adversely affected by resetting nodes before you transfer the
settings.
• If EtherNet/IP tag data links (cyclic communications) are used with a repeating hub, the communica-
tions load on the network will increase. This will increase collisions and may prevent stable commu-
nications. Do not use repeating hubs on networks where tag data links are used. Use an Ethernet
switch instead.

EtherCAT Communications

• Malfunctions or unexpected operation may occur for some combinations of EtherCAT revisions of
the master and slaves. If you disable the revision check in the network settings, use the Sysmac
Studio to check the slave revision settings in the master and the actual slave revisions, and then
make sure that functionality is compatible in the slave manuals or other references. You can check
the actual slave revisions from the Sysmac Studio or on slave nameplates.
• If the Fail-soft Operation parameter is set to stop operation, process data communications will stop
for all slaves when an EtherCAT communications error is detected in a slave. At that time, the Servo
Drive will operate according to the Servo Drive specifications. Make sure that the Fail-soft Operation
parameter setting results in safe operation when a device error occurs.
• If noise occurs or an EtherCAT slave is disconnected from the network, any current communications
frames may be lost. If frames are lost, slave I/O data is not communicated, and unintended opera-
tion may occur. The slave outputs will behave according to the slave specifications. Refer to the
NY-series Industrial Panel PC Machine Controller Hardware User's Manual (W557)
Precautions for Safe Use
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