Fuji Electric ALPHA7, User Manual

Page: 551 / 662

CHAPTER 13 MODBUS RTU COMMUNICATION
13-12
Transmission Protocol
13
Data1 (=A5h)
OUT13
1 (ON)
OUT12
0 (OFF)
OUT11
1 (ON)
OUT10
0 (OFF)
OUT9
0 (OFF)
OUT8
1 (ON)
OUT7
0 (OFF)
OUT6
1 (ON)
Data2 (=02h)
0 0 0 0 0 0
OUT15
1 (ON)
OUT14
0 (OFF)
 FC 05h (Write in single coil data)
(1) Query from the master
Station No. 1 byte
FC 1 byte ･･･
05h
Information
Address 2 bytes
(H)
･･･
Specify the coil address.
* For the addresses, refer to the table 13-2.
(L)
Coil data 2 bytes
(H)
･･･
Specify 000h for OFF and FF00h for ON.
(L)
CRC check
16 bits
(2 bytes)
(L)
(H)
(2) Response message form the amplifier
Station No. 1 byte
FC 1 byte ･･･
05h
Information
Address
2 bytes
(H)
･･･
Specified address.
(L)
Coil data 2 bytes
(H) ･･･
Specified data.
(L)
CRC check
16 bits
(2 bytes)
(L)
(H)
(3) Message examples
Shows a message example to write in ON to OUT9 signal.
<Query example>
Station No. 1 byte
01
･･･
When the amplifier station no. is "1".
FC 1 byte 05
Information
Address 2 bytes
02 ･･･
Specify 0208h as the CONT9 signal address.
08
No. of coil data
2 bytes
FF
･･･
Specify ON = FF00h .
00
CRC check
16 bits
(2 bytes)
0C
40