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MELSEC-Q
6 PROGRAMMING
(6) 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 Section 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).
No. Description No. Description
SB00AC Offline test instruction SW00AC
Offline test execution item/faulty station
(requesting side)
SB00AD Offline test completion SW00AD Offline test result (requesting side)
(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).
No. Description No. Description
SB00AE Offline test response SW00AE
Offline testing Execution item (Response
side)
SB00AF Offline test response completion SW00AF Offline testing results (Response side)