Omron C200HW-CLK21, CVM1-CLK21 Communications error type Data link areas, C200HX/HG/HE PLC

Application Precautions		Section 1-5
Lot No.: @ @	5 6 . . . . . Manufactured in May 1996
		Indicates the last digit of the manufacturing
		year. In this example, the year is 1996.
		Indicates the month of manufacture. October,
		November, and December are indicated by x, y,
		and z respectively. In this example, the month is
		May.

•Set routing tables at all the nodes in all the networks when multiple net- works are connected.

Controller Link Network 1 Controller Link Network 2

CC L P K U

CC L P K U

C L K

CC L P K U

CC L P K U

C L K

CC L P K U

CVM1 or	C200HX/HG/HE PLC	CVM1 or	C200HX/HG/HE PLC CVM1 or
CV-series PLC		CV-series PLC	CV-series PLC

Routing tables are necessary at all the nodes regardless.

•When using the SEND/RECV or CMND instructions on a PLC for which routing tables have been set, be sure to specify the network addresses that are set in the routing tables.

•When using manually set data links, delete the data link tables from all nodes not participating in the data links.

•Do not transfer (write) routing tables when data links are active (i.e., started). CPU Bus Units and Communications Units are reset when rout- ing tables are transferred.

•Do not restart or reset the polling node while data links are active.

•The following table shows the status of the data link refresh areas when a node registered in the data link table generates a communications error.

Communications error type	Data link areas
A node separates from the net-	Data received immediately prior to the error
work while a data link is running.	continues to be refreshed in the data link
	areas of the relevant nodes.
A node does not join the network	Zero (0) data continues to be refreshed in
after the data links start.	the data link areas of the relevant nodes.

•When CS1W-CLK21-V1 and CJ1W-CLK21-V1 Units are used with other models in the same network, set the node addresses of all nodes to between 1 and 32. It is not possible to construct a network that uses a node address higher than 32 in a network that includes pre-version-1 models.

Turn OFF the Wired Network 62 Node Enable Bit (bit 11 of D30000 + 100 ⋅ Unit No.) in the DM Parameter Area software switch of all CS1W- CLK21-V1 and CJ1W-CLK21-V1 Units to restrict the network to 32 nodes max. If a different value is specified, the network will be incorrectly config- ured.

•To construct a network that uses a node address higher than 32, it is nec- essary for all nodes to be CS1W-CLK21-V1 or CJ1W-CLK21-V1 Units. In addition, the Wired Network 62 Node Enable Bit in the DM Parameter Area software switches of all nodes must turned ON to enable 62 nodes maximum. If a different value is specified, the network will not be correctly configured.

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