4. FUNCTIONS
MELSEC-A
4-13
(3)
Address information area
This area shows the station address, input byte length, and output byte length for each slave
station. This allocation is set by the configurator. The station addresses for the 1st through the
60th stations are stored in the order of registration in the configurator. (Station addresses: 1 to
126, do not need to be sequential numbers.)
The address information area configuration is shown below. For details refer to Section 4.3.2 (4).
Address
1920/780h
1921/781h
1922/782h
1923/783h
2036/7F4h
2037/7F5h
2038/7F6h
2039/7F7h
Station address of 1st station
1st station input byte length
1st station output byte length
Station address of n station
n th station input byte length
n th station output byte length
Station address of 59th station
59th station input byte length
59th station output byte length
Station address of 60th station
60th station input byte length
60th station output byte length
2nd station input byte length
2nd station output byte length
Station address of 2nd station
(a)
The station address of unallocated stations is FFFFh, and the I/O byte is FFh.
(b)
When the I/O byte length of allocated stations is 0, a 0 is stored for the byte length.
(c)
The n does not show the station address but represents a number (the nth number) used for
the input/output area.