Banner SureCross DX80 Wireless Networks - Manual (Page 3)

1 Host Controller Systems
The Host Controller Systems reference guide contains information about using Modbus RTU, Modbus/TCP, and EtherNet/IP
commands with the SureCross DX80 family of products. This guide includes register maps, control codes, error message
handling, supported function codes, and some sample commands to perform specific tasks. This guide also lists control
codes and sample commands for configuring I/O parameters by writing to Modbus registers.
The SureCross ® DX80 Gateway uses Modbus RTU, Modbus/TCP, or EtherNet/IP ™ protocols to communicate with host
controller systems or external devices.
• The Modbus Serial Line RTU protocol is a master-slave protocol typically used for industrial applications. Only
one master at any given time is connected to the bus while up to 247 slaves nodes can be connected to the serial
bus.
• The Modbus TCP/IP protocol is an open standard implementation of Modbus on Internet protocols. Modbus
TCP/IP is similar to Modbus RTU but transmits information within TCP/IP data packets.
• EtherNet/IP is also an application layer protocol for industrial automation. EtherNet/IP is built on the TCP/IP
protocols and uses standard Ethernet hardware.
Modbus is the native protocol for the DX80 wireless system. All wireless devices are organized with a two-byte register for
each I/O point. Sixteen registers are allocated for each device, typically eight registers for inputs and eight registers for
outputs. In the world of Modbus, these registers are addressed consecutively beginning with the Gateway, then Node 1
through Node N.
EtherNet/IP separates the input registers and output registers into blocks. The two blocks of registers, or instances, are
consecutively ordered from the Gateway, then Node 1 through Node 15. The EtherNet/IP interface implementation also
allows for 100 extra input and output registers that can be customized for specific applications.
This configuration guide outlines the procedures involved in configuring I/O parameters by writing to registers. Parameter
configuration using registers can be done with a host system connected to a Gateway, GatewayPro, or Gateway and
Ethernet Bridge combination and any supported protocol.
For more information on Modbus, including basic reference guides, please refer to www.modbus.org . For more information
on specific SureCross components, refer to the data sheets for the SureCross devices.
EtherNet/IP is a trademark of ControlNet International, Ltd and Open DeviceNet Vendor Association, Inc.
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