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4.
PRECAUTIONS WHEN DESIGNING A SCREEN
MELSEC-A
(2)
Special-function modules whose device BM can be monitored
The following types of special-function modules can be set when device
BM (buffer) is set for monitoring.
The manual for each type of module gives details about the buffer
configuration of each module.
Although access to all buffer areas of each module is enabled, if a write
access is attempted to the input-only area, normal operations of the
module cannot be guaranteed.
Do not set a write access to the input-only area.
I
Special-Functlon Modules *1
1
-1 Access is enabled to a special-function module installed in the base unit on which a PC CPU
loaded with an AD57G is mounted. (Access to other stations is disabled.)
Special-function modules not shown above cannot be accessed.
POINT
(
When setting the buffer of a special-function module to a monitoring
target, set a number that is same as the head
I10
number designated
by a FROMITO instruction of a sequence program in the setting area of
the 'module head
I 1 0
number".
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