Mitsubishi Electric MELSEC-A User Manual page 137

14. AJ71 UC24 MASTER STATION
MELSEC-A
14.11 Programming
14.1 1 . I Notes on programming
(1) The AJ71 UC24 buffer memory data is initialized by:
(a) Resetting the PC CPU; or
(b) Switching the PC power off then on
(2) The initial data in the buffer memory is written to the AJ71UC24 oper-
ating system ( 0 s ) when Y(n+l)O switches on.
Hence data at buffer addresses OH to 18H cannot be rewritten during
the pre-transmission or data transmission sequence.
(3) For transmission delays between the PC CPU and slave stations, see
Section 14.9.
(4) For details on the use of the FROM and TO instructions for data
communication with the PC CPU, see the Programming Manual.