YOKOGAWA F3LC11-1F, User Manual

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B1-3
IM 34M6H41-02E 2nd Edition : Aug. 1, 2005-00
Event Transmission Function
You can send any data that is 30 words
*1
or shorter from the FA-M3 to a higher-level
equipment. Event transmission requires some programming on the FA-M3 side. (You
can send an event by simply storing the data to be transmitted into the register of the
Personal Computer Link module and then turning on the Request to Send relay).
To send numeric data as ASCII character strings, simply turn on a 1-bit relay and the
module will automatically perform ASCII conversion and transmission.
Although PC link commands are processed according to the timing of the higher-level
equipment, the event transmission function allows data to be transmitted according to
the timing of the FA-M3.
CAUTION
Up to 30 words
*1
(60 bytes) of data can be transmitted at each event transmission. To
transmit more than 30 words of data, write programs that use the event transmission
function to notify the higher-level equipment of a request to get data and when the high-
level equipment receives the event, it uses PC link commands to read data longer than
30 words.