S
MART
AXIS P
RO
/ L
ITE
U
SER
'
S
M
ANUAL
FT9Y-B1378
11-7
11: M
ODBUS
C
OMMUNICATION
Processing Requests
The data for Modbus communication are processed between the master and slaves as shown below.
Bit Data at Slaves (Function Codes 01, 02, 05, and 15)
Master Device Address: Internal Relay
Master Device Address: Data Register
Word Data at Slaves (Function Codes 03, 04, 06, and 16)
Master Device Address: Internal Relay
Master Device Address: Data Register
r
Bit +0
Master
Bit +1
Bit +2
Internal Relay (M)
Bit +0
Slave
Bit +1
Bit +2
Modbus Address
Word +0
b15
Master
Word +1
Word +2
Data Register (D)
b14 . . .
b1
b0
Bit +0
Slave
Bit +1
Bit +2
Modbus Address
b2
b15 b14 . . .
b1
b0
b2
b15 b14 . . .
b1
b0
b2
Bit +0
+15
Master
Bit +16
Bit +32
Internal Relay (M)
+14 . . .
+1
+0
Word +0
Slave
Word +1
Word +2
Modbus Address
+2
+31 +30 . . .
+17 +16
+18
+47 +46 . . .
+33 +32
+34
Word +0
b15
Master
Word +1
Word +2
Data Register (D)
b14 . . .
b1
b0
Word +0
Slave
Word +1
Word +2
Modbus Address
b2
b15 b14 . . .
b1
b0
b2
b15 b14 . . .
b1
b0
b2
Summary of Contents for SmartAXIS FT9Z-1A01
Page 1: ...FT9Y B1378 7...
Page 10: ...TABLE OF CONTENTS Preface 9 SMARTAXIS PRO LITE USER S MANUAL FT9Y B1378...
Page 212: ...7 DEVICE ADDRESSES 7 16 SMARTAXIS PRO LITE USER S MANUAL FT9Y B1378...
Page 230: ...8 INSTRUCTIONS FUNCTION BLOCKS REFERENCE 8 18 SMARTAXIS PRO LITE USER S MANUAL FT9Y B1378...
Page 344: ...13 SCRIPTS 13 36 SMARTAXIS PRO LITE USER S MANUAL FT9Y B1378...
Page 386: ...APPENDIX Appendix 16 SMARTAXIS PRO LITE USER S MANUAL FT9Y B1378 Japanese Font JIS X0201...
Page 393: ......