Execution Of Fx Programmable Controller Link - Mitsubishi LE-40MTB-E Instruction Manual

9.7 Execution of Fx programmable controller link

1. Outline
• The tension controller LE-40MTB-E can perform the parallel wire link with the Mitsubishi MELSEC-F
(FX2N) series programmable controller.
• When the tension controller LE-40MTB-E is linked to the programmable controller, the data setting can
be performed from the programmable controller to the tension controller,and the control status of the
tension controller can be monitored in the programmable controller.
• In the parallel wire link, the contact information and the data can be linked by simply connecting a pair
of twisted pair cables to the RS-485 board FX2N-485BD which is connected to the LE-40MTB-E and
the programmable controller.
Compared with the conventional analog link, the number of cables used is smaller and the system of
higher reliability can be achieved at a lower cost by the parallel link.
2. Transmission signal configuration
• The wire link function of the FX2N Series programmable controller is built in the LE-40MTB-E.
• The local stations are already set in the LE-40MTB-E by the system program.
• The internal contacts and data can be easily transferred by updating or reading the internal contacts
and data registers in the link area on the programmable controller side.
The devices whose data is for Menu 0 exclusively are saved on the LE-40MTB-E side.
3. Handling the link data
• When the link data is saved on the LE-40MTB - E side, the data device whose data is for Menu 0 ex-
clusively is saved. Other data devices are not saved. When the data other than Menu 0 must be
saved, save such data on the master programmable controller side.
• When the data is written in the LE - 40MTB through link, it is written directly in the control table (Refer
to the users manual.). Accordingly, the data in the menu table is not updated. Because saving of the
data for Menu 0 is controlled in the control table, the data area for Menu 0 is saved automatically. But
because saving of the data for other menus is controlled in the menu table, the data obtained through
link is not saved automatically. When you want to save the data for other than Menu 0 in the LE-
40MTB-E, you must perform the manual operation (Press the [ENTER] key twice).
• When the switch-over menu No. data (Set value No. 70) is updated on the master programmable con-
troller side while the LE-40MTB-E is stopped, the menu can be switched over through link.
• For all the link data, the priority is given to the last data. When the data currently set is updated through
the link, the updated data becomes effective immediately after the LE - 40MTB-E receives it. When
two or more set values are transferred in the same timing at the same time, the priority is given to the
one having a larger data register No. in the link area. (The data whose device No. is larger will be pro-
cessed later.)
Automatic
LE-40MTB-E
communication
M800～M899
Local
station
M900～M999
D490～D499
D500～D509
Automatic
M8071
communication
M8000
46
FX2N siries PC
M800～M899
Master
station
M900～M999
D490～D499
D500～D599
M8070
M8000