12-18 VersaMax Modules, Power Supplies and Carriers User's Manual
GFK-1504N
12
I/O Defaults
The module is easily set up with a jumper for the outputs to either hold their last
states or default to 0V if backplane power or communications are interrupted or
the PLC is stopped. External user power must remain uninterrupted. Outputs
remain in their default or last state until the module receives different output
data from the backplane, or until field power is removed.
When software-configured, inputs can be configured to hold last state or report
a selectable value. When the module is auto-configured using a CPU or NIU
that is version 2.x or later, inputs default to 0. If the CPU or NIU is version 1.5 or
earlier, the input default matches the jumper-configured output default (0 or
Hold Last State).
