Delta C2000 Series User Manual page 639

When the reported message indicates no error, it will switch to the next transmitted command
6
M1077 M1078 M1079
' (,- ' (,-
$ $ " .
If time out occurs or an error is reported, the M1077 will change to On. At this time, after a delay of 30
scanning cycles, it will re-issue the original command once
14 M1077
485 R/W rite is co
&
33
M1002
ON only for 1 scan a
M200
Delay cycle
36
M100 M0
( !/
M1
M2
M3
M4
It will repeat after sending all commands
102
M5
&
121
Practical applications:
Actual use to control the RTU-485 module.
Step 1: Set the communications format. Assume that the communications format is 115200, 8,N,2,
RTU
C2000 The default PLC station number is set as 2 (09-35)
09-31=-12(COM1 is controlled by the PLC ), 09-01=115.2(The communications speed is 115200 )
09-04=13(The format is 8,N,2, RTU)
RTU485: The station number = 8 (give example)
ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0
' (,-
$ $
%
%
PA3 PA2 PA1 PA0 DR2 DR1 DR0 A/R
%
( +
&& &
( M200 )
( M100 )
% ' &
&(-
&
&(- % 0 '
&(- % &
&(- % &
&(- % &
%
123
%
16-147
PLC Function Applications
%
%
&
&
%
Delay cycle
ReqTXOnce
%
&
%
END