Publication 1763-RM001B-EN-P - April 2007
Communications Instructions
361
Enabling the MSG Instruction Via User Supplied Input
This is an example of controlling when the message instruction operates.
Input I:1/0 could be any user-supplied bit to control when messages are
sent. Whenever I:1/0 is set and message MG11:0 is not enabled, the
message instruction on rung 0001 is enabled.
Local Messages
The controller is capable of communicating using local or remote
messages. With a local message, all devices are accessible without a
separate device acting as a bridge. Different types of electrical interfaces
may be required to connect to the network, but the network is still
classified as a local network. Remote messages use a remote network,
where devices are accessible only by passing or routing through a device
to another network. Remote networks are discussed on page 388.
Local Networks
The following three examples represent different types of local networks.
Internet (if required)
PC
Ethernet Switch
MicroLogix 1100
NET-ENI/ENIW
MicroLogix 1000
SLC 5/05
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