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MART
AXIS P
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ITE
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S
M
ANUAL
FT9Y-B1378
11-1
11:M
ODBUS
C
OMMUNICATION
Introduction
The SmartAXIS supports the Modbus communications protocols.
When a communication cartridge is installed on the expansion communication port, Modbus RTU protocol can be used. The
SmartAXIS can communicate with hardware devices supporting Modbus RTU protocol via RS-232C/RS-485.
Modbus TCP protocol can also be used on the built-in Ethernet port. The SmartAXIS can communicate with hardware devices
supporting Modbus TCP protocol via Ethernet.
Modbus Communication via RS-232C/RS-485
Applicable SmartAXIS
The SmartAXIS supports the Modbus RTU protocol and can be used as the Modbus RTU master and the Modbus RTU slave. When
configured as a Modbus RTU master, the SmartAXIS can monitor and change the data of Modbus RTU slave devices. When the
SmartAXIS is configured as a Modbus RTU slave, the device data of the SmartAXIS can be monitored and changed from the
Modbus RTU master device.
For the Modbus RTU master function and how to configure it, see "Modbus Master Communication" on page 11-2. For the Modbus
RTU slave function and how to configure it, see "Modbus Slave Communication Specifications" on page 11-8.
Notes:
Modbus communication of the SmartAXIS does not support ASCII mode. Configure all the Modbus devices to communicate with as in RTU
mode.
The 24-I/O type has one expansion communication port. The 40- and 48-I/O types have two expansion communication ports. The 12-I/O
type has no expansion communication port.
FT1A-12
FT1A-24
FT1A-40
FT1A-48
—
X
X
X
Modbus RTU Master
Modbus RTU Slave 1
Modbus RTU Slave 31
Shielded 2-core twisted pair cable, total length 200 m
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: ......