DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

3. Instruction Set
Timing diagram:
SET M1122 X0
RS executes X20
Transmission ready M1121
Sending request M1122
Auto reset after transmitting completed
Receiving completed M1123
User has to manually
reset in program
Receiving ready M1124
Communication reset M1125
Reset the status to the initial
communication ready status.
M1127
MODRD/RDST/MODRW
data receiving/converting
completed
Transmitting/receiving M1128
Change
status
immediately
1 2 3 1 2 3 4 5 6 7 8
ASCII to HEX,
less than a scan cycle
Receiving time out M1129
Receive time out
timer set by D1129
Activated when time-out timer reaches
the set value
Stop timing after complete
data is received
Coverting data of M1131
MODRD/RDST/MODRW
to hexadecimal
Residual words of
transmitting data D1122
3
2
1
0
Converting data
8
Residual words of
receiving data D1123
7
6
5
4
3
2
1
0
3-225