Delta DVP-ES2 - Manual (Page 341)

3 . I n s t r u c t i o n S e t
3 - 2 2 5
Timing diagram:
SET M1122 X0
RS executes X20
MODRD/RDST/MODRW
data receiving/converting
completed
M1127
Coverting data of
MODRD
to hexadecimal
/RDST/MODRW
M1131
Transmission ready M1121
Sending request M1122
Receiving completed M1123
Receiving ready M1124
Communication reset M1125
Transmitting/receiving M1128
Receiving time out M1129
Receive time out
timer set by D1129
Residual words of
transmitting data D1122
Residual words of
receiving data D1123
Auto reset after transmitting completed
Change
status
immediately
User has to
reset in program manually
Reset the status to the initial
communication ready status.
ASCII to HEX,
less than a scan cycle
Activated when time-out timer reaches
the set value
Stop timing after complete
data is received
Converting data
1 2 3 1 2 3 4 5 6 7 8
3
2
1
0
3
2
1
0
4
5
6
7
8