11
PROGRAMMING
11
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11.1 Precautions on Programming
11.1.1 Interlock related signals
CHAPTER 11 PROGRAMMING
11.1 Precautions on Programming
This section explains the precautions on creating programs using data on a network.
11.1.1 Interlock related signals
The following table shows a list of the interlock signal devices used in a user program.
For details of other devices to check the operating status, setting status, and other
functions of the own station and other stations, refer to the following manual.
CC-Link IE Controller Network Reference Manual
Assignment of link special relays (SB) and link special registers (SW)
Device
Name
Description
Device status
OFF (0)
ON (1)
SB0020
Board status of
own station
Stores the communication status between CC-
Link IE Controller Network board and personal
computer.
Normal
Abnormal
SB0047
Baton pass status
of own station
Stores a baton pass status of the own station.
A transient transmission is possible even when
the Baton pass status of own station (SB0047) is
ON.
If the status is abnormal, stores the cause of the
abnormal status in the Baton pass status of own
station (SW0047) and Cause of baton pass
interruption (SW0048).
Normal
Abnormal
SB0049
Data link status of
own station
Stores a data link status of the own station.
If the status is abnormal, stores the cause of the
abnormal status in the Cause of data link stop
(SW0049).
Normal
Abnormal
SB00A0
Baton pass status
of each station
Stores a baton pass status of each station.
If an abnormal station is found, stores the station
number to the Baton pass status of own station
(SW00A7).
Conditions:
• Valid when the Baton pass status of own
station (SB0047) is OFF.
If the Baton pass status of own station
(SB0047) is ON (abnormal), the previous data
is maintained.
• Reserved stations, and the maximum station
number and later are out of the subject.
All stations are
normal.
Abnormal
station(s) exists.
