LS Industrial Systems GLOFA G7M-DR20U, User Manual

Page: 270 / 367

Chapter 8. Communication Functions
8-44
•
Send / Receive
- Not defined: It is the initial value that doesn’t declare a frame format.
- Send: It is that declares send frame.
- Receive: It is that declares receive frame.
- When Frame 0 window is activated, Tx/Rx term is set as “Not defined,” and all the segments are not in
activation.
•
Segment (1-8): Enter segment by segment to separate fixed sending data area (CONSTANT) and device
area (Array).
Item Contents
To set a segment type, there’re NONE (not defined), CONST (fixed data
area), ARRAY (Device area). CONST declares commands and fixed data that
are used for communication frame and ARRAY is used to input and save the
data needed for interactive communication. ARRAY type must be always set
by byte.
Ex.1) %MB0, %QB0.0.0 (← ○)
Ex.2) %MX0, %MW0, %MD0, %QX0.0.0, %QW0.0.0(← ×)
This field is to declare commands and fixed data that will be used in communication
frame and constant data to be declared by inputting. ASCII input must be done
within 10 characters and hex within 20 characters. If the number exceeds the limit,
set the next segment as the same type and continue to input there.
Ex. 1) 10RSB06%MW10006
If the segment is declared as ARRAY type, although word type data is declared in
CONST type, the related area is to be set by byte.
Ex2) As a dedicated protocol communication, 10RSB06%MW10006 is a frame to
execute reading 6 word data from %MW100 at the slave station no. 16. At the
moment, ARRAY must be set in 6 words that is 12 bytes, as the area to save the
data that is read.