Omron CJ Series, Operation Manual

Page: 23 / 415

3 Application Precautions
xxiii
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Be sure that the communications cables and other items with locking
devices are properly locked into place.
•
Observe the following precautions when wiring the communications cable.
•
Separate the communications cables from the power lines or
high-tension lines.
•
Do not bend the communications cables.
•
Do not pull on the communications cables.
•
Do not place heavy objects on top of the communications cables.
•
Be sure to wire communications cable inside ducts.
•
Use appropriate communications cables.
•
Before touching the PCI Board, be sure to first touch a grounded metallic
object in order to discharge any static build-up. Not doing so may result in
malfunction or damage.
•
When transporting a Board or Card, use the special box in which it was
shipped to protect the LSIs and ICs from being damaged. Also do not
subject the Board or Card to excessive vibration or shock.
•
Because the devices are reset in order, communications errors will
temporarily occur in the master and slaves. For this reason, do not
download the network configuration while the master-side PLC (CPU Unit)
is operating.
•
When downloading the network configuration, each of the devices is reset.
If the Master Unit is reset first, it may cause errors in writing parameters to
the subsequent slaves. For that reason, this method (downloading the
network configuration) should be used only when the Master Unit has been
given the highest address.
•
Downloaded device parameters will be valid only after the devices are reset
unless they are the OMRON CVM1-DRM21-V1, C200HW-DRM21-V1,
CS1W-DRM21(-V1), or CJ1W-DRM21.
•
When the devices are reset, communications errors will temporarily occur.
For this reason, do not reset the devices while the master-side PLC (CPU
Unit) is operating.
Data Links in Controller Link or SYSMAC LINK Networks
•
The data link mode (manual setting or automatic setting) and data link
method are determined according to the data link setting in the startup node.
In the startup node, set a data link table for manual settings and data link
automatic setting parameters for automatic settings. If the settings are
incorrect, the data links will not start.
Check the following items before starting data links.
(1) Manually Set Data Links
Check the data link tables in each node participating in the data link to
see that they are correct.
Be sure that data link tables are deleted from nodes that are not
participating in the data links.
(2) Automatically Set Data Links
Be sure that the correct DM parameters have been set in the data link
startup node.