gefran BDI50 Benutzerhandbuch Seite 157

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.
1.3 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)
1.4 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
FUNCTION
COMMAND
DATA LENGTH
-----------------------
Checksum
CS(H)
CS(L)
01H
03H
01H
00H
0AH
0FH------------true complement
= F1H
= 46H (ASCII)
= 31H (ASCII)
App 3-2
SLAVE
Address
Function Code
DATA
CRC CHECK
Signal Interval