Changing The Data Link Tables With Active Data Links; Checking By Manipulating Bit/Word Status; Overview - Omron SYSMAC 3G8F7-CLK13-E Operation Manual

Changing the Data Link Tables with Active Data Links

Sufficient
Node 1
Send
area
Note
5-4-3

Checking by Manipulating Bit/Word Status

5-5

Changing the Data Link Tables with Active Data Links

5-5-1

Overview

Note
• The following shows an example of an insufficient receive area.
Node 2
Receive
area
Data indicated by
is received in
node 2.
1. A communications error will occur in a node that is not participating in the
network.
2. When a communications error occurs or a node is separated from the net-
work, previous status will be retained for other node status.
3. A node which is participating in the network but is not participating in the
data links will show the PC operating status and PC error.
4. On the Controller Link Support Board, a node participating in the network
but not in the data links will show the PC operating status, PC errors, com-
munications errors, and data link participation for all nodes.
5. When there is not enough receive data to filling a receive area ("area re-
maining") at a computer node, the status of the rest of the receive area will
be indeterminate.
Although the data link function itself may be operating correctly, the data link
areas may have been input incorrectly.
After you have confirmed that the data link function is operating normally,
check to see whether or not the data link is operating as intended, i.e., check
to see if the desired bits/words data is being transferred to the intended words
at other nodes.
Change the contents of a bit or word in a data link send area using a Pro-
gramming Device or the user program and check whether the change is
reflected in data link areas of other nodes as intended.
The contents of the data link areas set on the local node for the Controller
Link Support Board can be read and written using the memory monitor pro-
gram of the FinsGateway. For details refer to the FinsGateway online help.
The data link tables can be changed and data link tables can be allocated for
newly added nodes while the system's data links are active if the following
Controller Link Units and Support Boards are used.
• Models that Support Data Link Table Changes during Active Data Links
Wired Networks
Optical Ring Networks
using H-PCF Cable
Optical Ring Networks
using GI Cable
1. Lot numbers 030601 or later.
Insufficient (short)
Node 1
Send
area
Data indicated by
cannot be received in node 2.
Data indicated by
and the remaining data is truncated.
CS1W-CLK23, CJ1W-CLK23, 3G8F7-CLK23-E,
CS1W-CLK21-V1, CJ1W-CLK21-V1, and 3G8F7-
CLK21-EV1
CS1W-CLK13, 3G8F7-CLK13-E,
CS1W-CLK12-V1 (See note 1.), and 3G8F7-CLK12-EV1
CS1W-CLK53, 3G8F7-CLK53-E,
CS1W-CLK52-V1 (See note 1.), and 3G8F7-CLK52-EV1
Section 5-5
Node 2
Receive
area
is received
87