Pepperl+Fuchs ICDM-RX/MOD, Manual

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ICDM-RX/MOD User Manual
Overview
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1.4. Modbus Router Functionality
The Modbus Router application provides the following functionality:
• Provides robust connectivity from all supported master devices to all supported slave devices:
- Supported Masters:
- Modbus/TCP Master - accepts Modbus/TCP messages on up to eight TCP/IP ports. This includes
502 and seven configurable ports.
- Modbus/RTU Serial Master
- Modbus/ASCII Serial Master
- Modbus/RTU over Ethernet TCP/IP Master
- Modbus/ASCII over Ethernet TCP/IP Master
- Supported Slaves:
- Modbus/RTU Serial Slaves
- Modbus/RTU ASCII Slaves
- Remote Modbus/TCP Slaves (addressable to device ID and IP address/port)
- Remote Modbus/RTU Serial Slaves (via Modbus/TCP using another gateway)
- Remote Modbus/ASCII Serial Slaves (via Modbus/TCP using another gateway)
• Multiple ICDM-RX/MOD chassis can be used together to form a Modbus network.
• Supports up to 255 public Modbus devices per gateway and/or Modbus network. Both standard, (1-247),
and reserved, (248-255), device IDs are supported.
• All Modbus devices not configured remotely are assumed to be locally connected to the gateway.
• The locations of all local Modbus devices are determined automatically.
• Modbus Device ID Aliasing. Modbus message device ID can be aliased when messages are received from
a Modbus master.
• Device ID Offset. At the serial port interface, device IDs can have a positive or negative offset applied to
change the device ID range.
• Supports up to 96 Modbus/TCP connections. This can include any combination of slave and master
connections.
• Modbus/RTU and Modbus/ASCII over Ethernet TCP/IP Master specific:
- Can support up to six TCP/IP connections per serial port configuration.
- All messages received from any Ethernet TCP/IP Master connection enter the routing functionality and
can be routed to any local or remote device.
- Combined with a serial port redirector, such as the Fuchs Comtrol Secure Port Redirector, can
provide COM port functionality from a computer to the Modbus network.
• Supports connectivity to private Modbus serial buses, such as a serial master and slave(s) on a RS-485
loop:
- The Modbus master is provided connectivity to the public Modbus network.
- Only the master has direct access to the serial devices on the private serial network.
- Private slaves are protected from intrusion by other master(s).
- Both slave device specific and port level diagnostics are provided for private network communication.
• Advanced Master-to-Master connectivity is provided via the Shared Memory sub-system. Features are:
- Eight Holding Register blocks containing 200 registers each.
- Eight Coil blocks containing 160 coils each.
- Read access to all master(s) on the Modbus network.