105U-G Wireless Gateway
User Manual
Page 59
© September 2004
4.4.5
Change-of-State
If a value in the block changes by more than the sensitivity amount, then the block message
will be sent (this can only occur for Write mappings). The sensitivity values are set under the
“Sensitivity” option as per section 4.5.
A delay time can be entered to reduce the number of change triggers in active systems. For
example, if 20 seconds is selected in the “Delay” window, then the change message will be
sent 20 seconds after the change-of-state occurs - if other changes occur during the 20
second period, all of these changes are sent in the one message.
The delay time can be set from 0 – 254 seconds.
If you do not wish change messages to occur, select the “Disable” box.
4.4.6
Mixing Normal Mappings and Block Mappings
Block mappings can include I/O Registers already used with normal I/O mappings.
For example, a remote 105U I/O module could map a remote input to I/O Reg 743. At the
105G, the host device could read I/O Reg 743, and you could also configure a block mapping
including this register to another 105G. You could write a block I/O Reg 700 – 800 to
another 105G.
4.4.7
Comms Fail for Block Mappings
Each block mapping has an associated mapping number. Up to 500 block mappings may be
entered. A status register is maintained for each block mapping. The most significant bit of
this register contains the comm fail status.
If a block mapping does not receive an acknowledgement from the remote module, then the
comms fail status is set - this can be monitored by the host device.