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(3) Detecting line errors
Line errors are detected using the CC-Link IE Field Network diagnostics as well as link special relays (SBs) and
link special registers (SWs). (
(a) Checking line errors on other stations
1.
If other stations receive an error frame due to a line error, one of the following link special relays
(SBs) will turn on.
• PORT1 current error frame reception status (1) (SB0120)
• PORT1 error frame reception status (master station) (SB0121)
• PORT1 current error frame reception status (2) (SB0128)
• PORT1 current error frame reception status (station No.0) (2) (SB0129)
• PORT1 current error frame reception status (station No.0) (1) (SB012F)
• PORT2 current error frame reception status (1) (SB0130)
• PORT2 error frame reception status (master station) (SB0131)
• PORT2 current error frame reception status (2) (SB0138)
• PORT2 current error frame reception status (station No.0) (2) (SB0139)
• PORT2 current error frame reception status (station No.0) (1) (SB013F)
• PORT1 error frame reception detection status (1) (SB0140)
• PORT1 error frame detection (master station) (SB0141)
• PORT1 error frame reception detection status (2) (SB0148)
• PORT1 error frame reception detection status (station No.0) (2) (SB0149)
• PORT1 error frame reception detection status (station No.0) (1) (SB014F)
• PORT2 error frame reception detection status (1) (SB0150)
• PORT2 error frame detection (master station) (SB0151)
• PORT2 error frame reception detection status (2) (SB0158)
• PORT2 error frame reception detection status (station No.0) (2) (SB0159)
• PORT2 error frame reception detection status (station No.0) (1) (SB015F)
2.
When one of the link special relays (SBs) listed above turns on, the station number that received
an error frame can be checked using link special registers (SWs) of the same number (other than
SB0121, SB0129, SB0131, SB0139, SB0141, SB0149, SB0151, and SB0159).
Details on the causes of error can be checked using link special relays (SBs) and link special registers (SWs)
corresponding to the station number where the error has occurred. (
Number
SB0120
PORT1 current error frame reception status (1)
SB0121
PORT1 error frame reception status (master station)
SB0128
PORT1 current error frame reception status (2)
PORT1 current error frame reception status (station
SB0129
No.0) (2)
PORT1 current error frame reception status (station
SB012F
No.0) (1)
SB0130
PORT2 current error frame reception status (1)
SB0131
PORT2 error frame reception status (master station)
SB0138
PORT2 current error frame reception status (2)
Page 206, CHAPTER 9)
Description
Page 414, Section 11.4 (3) (b))
Number
SW0120 to
PORT1 current error frame reception status (each
SW0127
station) (1)
SW0128 to
PORT1 current error frame reception status (each
SW012F
station) (2)
SW0130 to
PORT2 current error frame reception status (each
SW0137
station) (1)
SW0138 to
PORT2 current error frame reception status (each
SW013F
station) (2)
CHAPTER 11 PROGRAMMING
Description
413
11
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Troubleshooting
