Yaskawa MP920 Communications Module - Manual (Page 276)

B.3 General-purpose Messages
B-27
B
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.
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).
(L)
(H)
n
Contents of
MW n items of data from Controller holding registers MW
to MW
+ n-1 are set and transmitted.
There is no response to the transmission.
Command
(L)
(H)
Contents of
MW
+1
(L)
(H)
Contents of
MW
+n-1
(L)
(H)
(L)
(H)
7 0
12H
34H
56H
78H
9AH
BDH
DEH
F0H
31H
34H
32H
33H
35H
38H
36H
37H
39H
43H
41H
42H
44H
30H
45H
46H
Command Command