Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 216

6 PROGRAMMING
No.
SB00AC Offline test instruction
SB00AD Offline test completion
No.
SB00AE Offline test response
SB00AF Offline test response completion
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(7) Checking the offline test status
The test status is checked through the LEDs on the network module, but it also
can be checked with link special relays (SB) and link special registers (SW).
(Refer to Sections 4.5 and 4.7.)
(a) Requesting side
1) When the offline test is instructed, Offline test instruction (SB00AC) is
turned ON.
An offline test item and a faulty station number are stored in Offline
test execution item/faulty station (requesting side) (SW00AC).
2) Upon completion of the offline test, Offline test completion (SB00AD)
is turned ON.
The offline test result is stored in Offline test result (requesting side)
(SW00AD).
Description
(b) Responding side (the forward/reverse loop test only)
1) When a response is made to an offline test request from the
requesting side, Offline test response (SB00AE) is turned ON.
An offline test item is stored in Offline test execution item (responding
side) (SW00AE).
2) Upon completion of the offline test, Offline test response completion
(SB00AF) is turned ON.
The offline test result is stored in Offline test result (responding side)
(SW00AF).
Description
No.
Offline test execution item/faulty station
SW00AC
(requesting side)
SW00AD Offline test result (requesting side)
No.
Offline test execution item (responding
SW00AE
side)
SW00AF Offline test result (responding side)
MELSEC-Q
Description
Description
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