Mitsubishi Electric Melsec-k Instruction Manual page 23

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r
Sending, receiving and link error indicator LEDs during optical data link
SD
O--;
+
-
-
-
- -
-
-
-
-
-
-
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-
SD is an LED for indicating sending and RD for indicating receiving. During
normal communication, both LEDs are lit dimly.
U
RD
e--:
ER ROR
O--
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- -
- - -
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Lit when optical communication i s abnormal. For example, breakage of
optical fiber cable and improper connection of optical connector.
When master test and slave test are conducted, this LED i s used for judge-
ment. See Section 5.3.4 (page 72).
When the scan time of master programmable controller i s 250 ms or
longer, this LED is lit during over time. See Section 5.3.1 (page 62).
Connector for connecting an optical fiber cable. When connecting the cable, remove the connector cover,
positively insert the connector of optical fiber cable, turn it
clockwise, and securely connect it.
Be careful not to touch the core a t the center of optical connector or not to apply dust to the core.
RD (for receiving) RD (for
SD (for sending)
2
/I=
SD (for sending)
Be sure t o connect the optical fiber cables from
SD (for sending) to RD (for receiving) and from
RD (for receiving) to SD (for sending).
eceiving)
Connector for extension cable
When the extension unit (E32, E56) is connected, connect the extension cable KOJ-61CBL or KOJ-61CBL2
to this connector.