App 3-2
1.3 Data format RTU MODE
MASTER (PLC etc.) send request to SLAVE, whereas response to
MASTER.
The signal receiving is illustrated here.
The data length is varied with the command (Function).
** The interval should be maintained at 10ms between command signal and request.
1.4 SLAVE(Address)
00H : Broadcast to all the drivers
01H : to the No.01 Drivers
0FH : to the No.15 Drivers
10H : to the No.16 Drivers
and so on....，Max to 32(20H)
1.5 Function Code
03H : Read the register contents
06H : write a WORD to register
08H : Loop test
10H : write several data to register(complex number register write)
2. CMS (Checksum and time-out definition)
2.1 LRC CHECK
Ex: ADDRESS 01H
FUNCTION 03H
COMMAND 01H
00H
DATA LENGTH 0AH
-----------------------
0FH------------true complement
Checksum = F1H
CS(H) = 46H (ASCII)
CS(L) = 31H (ASCII)
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