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CHAPTER 11 PROGRAMMING
11
11.3 Using Link Special Relay (SB) and Link Special Register (SW)
(7) Checking test results before wiring
Test results are checked through the LED on the master/local module, but can also be checked through link
special relays (SB). ( Page 60, Section 6.2)
(a) Checking hardware test results
1. When the hardware test is completed, Hardware test completion status (SB0090) is turned on.
2. When failed, Hardware test normal/abnormal end (SB0091) is turned on.
(b) Checking self-loopback test results
1. When the self-loopback test is completed, Self-loopback test completion status (SB0092) is turned
on.
2. When failed, Self-loopback test normal/abnormal end (SB0093) is turned on.
(8) Checking test results after wiring
Test results are checked by CC-Link IE Field Network diagnostics, but can also be checked through link special
relays (SB). ( Page 67, Section 6.4)
(a) Checking loop test results
1. When a loop test is started, Loop test request accept status (SB009A) is turned on.
2. When the loop test is completed, Loop test completion status (SB0094) is turned on.
3. When failed, Loop test normal/abnormal end (SB0095) is turned on.
Number Description Number Description
SB0090 Hardware test completion status
SB0091 Hardware test normal/abnormal end
Number Description Number Description
SB0092 Self-loopback test completion status
SB0093 Self-loopback test normal/abnormal end
Number Description Number Description
SB0094 Loop test completion status
SB0095 Loop test normal/abnormal end
SB009A Loop test request accept status