Mitsubishi Electric Melsec QJ71LP21 - Part Names and Settings; Qj71 Lp21, Qj71 Lp21-25, Qj71 Lp21 S-25, Qj71 Lp21 G, Qj71 Lp21 Ge

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MELSEC-Q
4 SETUP AND PROCEDURES BEFORE STARTING THE OPERATION
4.2 Part Names and Settings
This section explains part names and settings of the network modules.
4.2.1 QJ71LP21, QJ71LP21-25, QJ71LP21S-25, QJ71LP21G, QJ71LP21GE
(1) Indicator LEDs
Name LED status Description
RUN
ON (green)
The module operating normally
OFF A watchdog timer error occurred (hardware failure).
MNG ON (green) Operating as a control station or sub-control station
OFF Normal station (not operating as a control station or sub-control station)
T.PASS ON (green) Executing baton pass (being joined in a network)
Flashing
(green)
The test is determined to have completed when this LED flashes 20 times or more (approximately
10s) during the test.
OFF Baton pass not yet executed (The host station is disconnected from the network.)
D.LINK ON (green) Data link being executed (Cyclic transmission is being executed.)
OFF Data link not yet executed (e.g. parameter receiving not completed, host CPU error, data link stop
instructed)
SD ON (green) Data being sent
OFF Data not yet sent
RD ON (green) Data being received
OFF Data not yet received
ERR. ON (red)
• An error, such as a station number setting error, mode setting error (set to use prohibited),
operating condition setting error by parameter, and a mounted CPU type error (setting outside
the range used, incorrect CPU type), occurred.
• A station with the same number already exists in the network.
• Although a control station has already existed in the network, the host station is specified as a
control station.
• Invalid parameter setting
• The parameters received from the sub-control station and the parameters retained by the host
(received from the control station) are different.
• A moderate or serious error occurred in the CPU module.
Flashing
• An error was detected while the network module was being tested.
• The setting of the mode setting switch or the station number setting switch was changed during
operation.
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OFF Normal status
(4)
(4)
(3)
QJ71LP21,
QJ71LP21-25
QJ71LP21G,
QJ71LP21GE
QJ71LP21S-25
(2)
(6)
(1)
(4)
(4)
(3)
(2)
(6)
(1)
(4)
(4)
(3)
(2)
(6)
(5)
(1)
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