3.0 Modbus/TCP Communication Interface
The ICC ETH-1000 Ethernet gateway is configured for the appropriate Multigard 5000 system
model at MSA during system assembly and test. This includes both the hardware and gateway
configuration.
The gateway updates itself continuously with data from the Compact Logix L24 processor using
Ethernet/IP protocol via the Ethernet switch.
Data then becomes available in Modbus/TCP protocol from the ICC ETH-1000 Ethernet gateway
via the Ethernet switch. The gateway is a multiprotocol device using its single Ethernet port
operating per the 10/100Base-T standard.
3.1 Interface Cables
The Multigard system L24 processor and the ICC ETH-1000 gateway are connected to an
unmanaged Ethernet switch using patch cables of CAT-5e or better grade. See the Multigard
5000 system drawings for details on the hardware installation.
Also use a CAT-5e or better grade patch cable to connect to the Ethernet switch to the external
network providing a Modbus/TCP connection from the Multigard system to other customer
equipment.
3.2 Ethernet Addresses
The Ethernet addresses associated with the MultiGard 5000 System and the ICC ETH-1000
gateway must be set at MSA during factory configuration.
The addresses that will be set into the processor and gateway are from customer (or responsible
third party) supplied information as follows:
IP Address for the ICC ETH-1000 Gateway
IP Address for the Multigard system Allen-Bradley L24 processor
Subnet Mask common to this Ethernet network
Default Gateway common to this Ethernet network
NOTE: To satisfy the ETH-1000 the Default Gateway address must begin with 1-223
and it cannot consist of all zeros. If there is no desire to communicate over a default
gateway, then the address provided should not physically exist on the network.
The addresses will be placed onto labels located inside the MultiGard 5000 System enclosure for
easy reference as well as in the system configuration document (part of the 3-ring binder).
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