Mitsubishi Electric MELSEC QS Series User Manual page 96

7
PROCEDURE BEFORE STARTING THE DATA LINK
No. Name
LED indicators
QS0J61BT12
RUN L RUN
MST
1)
SD RD
ERR. L ERR.
Terminal block
NC
NC
DA
2)
SLD
DB
(FG)
DG
7
- 7 7.4 Part Names and Settings
Indicates the data link state by turning the LEDs ON or OFF.
LED name
ON: Module is normal
RUN
OFF: Watch dog timer error
ON: Communication error in all stations
Turns ON when the following type of error occurs.
• When master station is overlapped on the same line
• When there is an error in the parameter settings
• When the data link monitor timer timed out
ERR. • When the cable is disconnected, or the transmission route is being affected
by noise, etc.
To check the source of the error, see Section 9.4.Or, see Section 8.3.2 for
details regarding SW0058 (detailed LED display status)
Flicker: A communication error station identified, or remote station No.
overlapped.
MST ON: Operating as master station (during data link control)
L RUN ON: Executing data link
ON: Communication error (host)
L ERR. Flickering of inconsistent intervals: The terminating resistor is not attached.
Or, the module and CC-Link dedicated cable are affected by noise.
SD ON: Sending data
RD ON: Receiving data
Connect the CC-Link dedicated cable for the data link.
Refer to Section 7.6 for details on the connection methods.
The terminals SLD and FG are connected inside the module.
This is a 2-piece terminal block, and the module can be replaced without disconnecting the
signal wires connected to the terminal block. (Replace the module after turning its power
OFF.)
Details
Details