Host Device Trigger - Weidmuller WI-GTWY-9 User Manual

WI-GTWY-9-xxx Wireless Gateway
Each mapping entered is allocated a status register - the register number appears on the right
hand of the Block Mapping display. These registers store relevant status information about the
block mapping - the structure of the Block Mapping status registers is shown in Appendix 1.
In the above example, the status register for the block mapping has been automatically assigned
to register 9500.
The rest of the mapping configuration involves the mapping trigger - or what initiates the
mapping message.
Firmware version 1.82 and later.
Block write mappings have option to invert the I/O message that will be sent. This can be
selected when adding new write block mapping
Mapping "Triggers"
A block mapping can be "triggered" or initiated by several different methods.
• By the host device writing to a "trigger register" in the source WI-GTWY-9-xxx - the block
mapping message is sent each time the host device writes to the trigger register.
• By configuring a time period - the WI-GTWY-9-xxx will send the block mapping message
if this time period has elapsed since the last message has been sent.
• By configuring a real-time clock - the WI-GTWY-9-xxx will send the block mapping
message at the configured times.
• By a change-of-state within the I/O block. This can only occur for Write mappings. If a
value in the block changes by more than the sensitivity amount, then the block message will
be sent. You can enter a delay period such that the message is sent after the delay period.
Combinations of the above triggers can occur - for example, the block mapping message will be
sent if a change-of-state occurs, AND at the configured real-time, AND when the host device
writes to the trigger register.

4.5.2 Host Device Trigger

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