Mitsubishi Electric QJ71C24N User Manual page 121

4 SETTINGS AND PROCEDURES PRIOR TO OPERATION
Switch number
Transmission setting
Switch 1
CH1 side
Communication rate setting
Switch 2 Communication protocol setting
Transmission setting
Switch 3
CH2 side
Communication rate setting
Switch 4 Communication protocol setting
Switch 5 Station number setting
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(d) Station number setting (switch 5 (common for both CH1 and CH2 sides))
• This setting is for communication using the MC protocol.
• When several the Q series C24s are connected on the same line with
multidrop connection, set the station number designated in the data items
of the transmission frame in each external device to 0 to 31 (0
This number designates which external device is to be communicated
with the Q series C24.
• Set the station number to 0 when the system configuration of the external
device and the programmable controller CPU is 1:1.
External device
Station 0
POINT
If the communication of data with external device is to be started, check the
specifications of the functions to be used and then make the settings and connect
the cables.
Configure the following switch settings from GX Developer if there is to be no
communication (if the cables are not to be connected) at the interface.
• Communication protocol setting
• Transmission setting, communication rate setting : Set all to OFF.
(2) The setting and data flow in linked operation
(a) Set the related switches as follows when two Q series C24 interfaces are in
linked operation.
Settings
Operation setting
Data bit setting
Operation setting
Data bit setting
Q series C24
Station 1 Station 2
Set each switch on both CH1 and CH2 sides to
:
Set each switch on both CH1 and CH2 sides to
:
MELSEC-Q
H
Station 31
: Set any of 0 to 7 , or 9
H H
Setting value
b0 = OFF
the same specification.
Match the external device.
8
H
b0 = ON
the same specification.
Match the external device.
0 to 6
H H
Set according to (d) of (1)
to 1F ).
H
.
H
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