Chapter 4 Configuration
MAN_105G_1.5 Page 50
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.
4.5
Change Sensitivity
“Change” messages for both individual I/O mappings and block mappings use a sensitivity
value to trigger the message. Sensitivities are configured for blocks of I/O registers - that is,
each I/O register does not have a unique sensitivity. You can configure up to 50 sensitivity
values - that is, there can be 50 blocks of registers with different sensitivities.
In the above example, three sensitivity blocks have been configured:
1. I/O registers 0 – 49 have a sensitivity of 1000 (or 1.5% of the 16 bit range)
2. I/O registers 100 – 499 have a sensitivity of 250 (or 0.4% of the 16 bit range)
3. I/O registers 1000 – 2999 have a sensitivity of 100 (or 0.15% of the 16 bit range)
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