Setting The Remote 1/0 Station Numbers - Mitsubishi MELSEC-A AJ71PT3 User Manual

4. PRE-OPERATION SETIING AND PROCEDURE
_ _ _ _ _ _ _ _ _ _-.JIMELSEC;4
4.4. Setting the Remote 1/0 Station Numbers
Specify the remote I/O station numbers to determine the buffer
memory addresses for remote I/O station data, noting the
following:
(1) Any station number must not be changed during I/O refresh to
prevent input or output fault.
(2) Station numbers may be set between 1 and 64.
•
(3) The I/O refresh range depends on the number of remote I/O
stations (buffer memory address 0). For example, if 10 exists at
address 0, I/O refresh is performed with remote I/O stations 1
to 10. For further information, see Section 5.2.
(4) Station numbers do not have to be sequential, e.g. as shown in
Fig. 4.2.
Master station
Remote 110 station Remote 110 station Remote 110 station Remote 110 station
Station Station Station Station
04 01 02 03
i
I
,
I
t
I
t
I
t
I
Fig. 4.2 Remote 1/0 Station Number Setting
•
I
REMARKS
I
It is suggested to set sequential numbers to the input and output remote I/O
stations individually so that the transmission and receive data is transferred
sequentially.
For instance, if there are 10 input and 10 output remote 1/0 stations, set 1-10 to the
input remote
110
stations and 11-20 to the output stations. This defines the receive
data addresses as 110-114 and the transmission data addresses as 15-19 to allow
sequential data transfer.
(5) Remote I/O station numbers must not be skipped. Any station •
with a number specified but without a remote I/O unit
connected is regarded as faulty.
4-6
IB INAI 66164·A