Mitsubishi MELSEC LJ71C24, User Manual

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7 SETTINGS FOR THE C24
7.3.5 Setting and data flow in linked operation
In linked operation, all data received from one of the two interfaces are transmitted
from the other interface.
The linked operation is available only for the LJ71C24. It is not available for the
LJ71C24-R2.
POINT
When two interfaces are in linked operation, the transmission time for one
character becomes equal to the hardware gate off time of the L series.
(1) Setting
For the linked operation, set the related switches as follows.
For details of the switch setting, refer to Sections 7.3.1. to 7.3.4.
— Settings CH1 side CH2 side
Operation setting Independent Linked
Data bit
:
Transmission Setting
Setting modifications
Set each switch on both
CH1 and CH2 sides to the
same specification. Set each switch on both
CH1 and CH2 sides to the
same specification.
Communication rate setting Match the external device. Match the external device.
Communication protocol setting For linked operation setting
Set to any of the followings
• MELSOFT Connection
• MC protocol
• Nonprocedural protocol
Settings
Station number setting
(Common to CH1 and 2: 0 to 31)
Set according to Section 7.3.4.
(2) The data flow in linked operation
Two interfaces operate linked together using functions defined with the
communication protocol setting on the CH2 side (MC protocol in the same format
or a nonprocedural protocol) within the transmission specifications set in the
respective transmission settings.
CH2
C24 (data flow in linked operation)
CH1
CH2
CH1
2ch
1ch
Transmits only
to a designated
CH side.
(a) When setting the CH2 side to Nonprocedural protocol
Exclusive control of the received data is necessary when data is
communicated using the nonprocedural protocol since all the connected
stations receive the data.