Mitsubishi Electric QJ71GF11-T2 - Checking Line Errors on Other Stations; Detecting Line Errors

413
CHAPTER 11 PROGRAMMING
11
11.4 Using Link Special Relay (SB) and Link Special Register (SW)
(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). ( Page 206, CHAPTER 9)
(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. ( Page 414, Section 11.4 (3) (b))
Number Description Number Description
SB0120 PORT1 current error frame reception status (1)
SW0120 to
SW0127
PORT1 current error frame reception status (each
station) (1)
SB0121 PORT1 error frame reception status (master station) 
SB0128 PORT1 current error frame reception status (2)
SW0128 to
SW012F
PORT1 current error frame reception status (each
station) (2)
SB0129
PORT1 current error frame reception status (station
No.0) (2)

SB012F
PORT1 current error frame reception status (station
No.0) (1)
SB0130 PORT2 current error frame reception status (1)
SW0130 to
SW0137
PORT2 current error frame reception status (each
station) (1)
SB0131 PORT2 error frame reception status (master station) 
SB0138 PORT2 current error frame reception status (2)
SW0138 to
SW013F
PORT2 current error frame reception status (each
station) (2)