User manual

Page 74 915U-2 Wireless I/O
Page 74 User Manual
Chapter 5 - Diagnostics
5.1 IO Diagnostics
Figure 49- I/O Diagnostics
Selecting this option from the main screen will allow some basic reading and writing of
the I/O store registers within the module.
To read a register location, enter an address location, e.g. 10001 (for digital Inputs),
enter a count (number of consecutive registers) and then press the “Read” button
Below the buttons, you will see the returned address location and the returned values
To “Write” to outputs, enter the address location, count, and value and then press the
“Write” button.
You will then see the outputs change to the value you entered.
E.g. Write to Register 1 with a count of 8 and a value of 1 will turn all the Local Digital
Outputs on.
Write to Register 40001 with a count of 2 and a value of 49152 will turn all the Local
Analog Outputs to 20mA.
Note: If when reading a register and getting the symbol “~“ this indicates that the
register has not been written to and so it has no value (not even zero).
Note: if there is a mapping configured and any one of the source register values has a
“~“ the mapping will not be sent (see Error! Reference source not found.“Error!
Reference source not found.” for more details.
A mapping will only be sent when all registers have a value. You can use the Fail Safe
Block Configuration to set an initial value for registers on start-up. This can be done
using the Configuration software or Web based configuration. See Configuration
Supplements for details.
Using the I/O Diagnostics you can check the register locations for these “~“ values and
even write values if required.If when reading the Status of the DIO on the module you
see the value “3”, this indicates that the DIO is being used as an output in the “ON”
state.