General-Purpose Binary Mode; General-Purpose Ascii Mode - YASKAWA MP920 User Manual

B.3.2

General-purpose Binary Mode

In through mode, the values for the Controller holding registers (MW registers) are set as the
application data, and data is sent and received.
Command
7
Contents of
MW
Contents of
MW
Contents of
MW
B.3.3

General-purpose ASCII Mode

With ASCII mode, binary communications data is converted to ASCII before being trans-
mitted and received.
The following diagram shows an example of binary to ASCII conversion. As shown in the
example, 8-bit data is converted to two ASCII characters (7 bits).
Command
0
(L) n items of data from Controller holding registers MW
to MW
(H)
There is no response to the transmission.
(L)
+1
(H)
(L) (L)
n
(H)
(H)
(L)
+n-1
(H)
12H
34H
56H
78H
9AH
BDH
DEH
F0H
B-27
B.3 General-purpose Messages
+ n-1 are set and transmitted.
Command
31H
32H
33H
34H
35H
36H
37H
38H
39H
41H
42H
43H
44H
45H
46H
30H
B