Appendix 1. System definitions
APP1 - 3
2) I/O Configuration Parameters
These parameters are used to set the configuration of a system that will be operated. They set the
modules that will be mounted and operated onto their own slot in the base unit. If a parameter that has
been set and the real mounted module are different, the operation will not be executed. When writing a
new project I/O configuration parameters will be all set to default (DEF_MODULE).
If I/O configuration parameters are set to default, the operation starts on the basis of the configuration
of the real mounted module when the power is applied. Therefore, though a power failure had occurred
during normal operation or the system configuration had been changed due to slip-out of a mounted
module, operation starts and continues when the power has been re-applied because the system
considers that it is a normal operation state. To prevent this error, be sure to set correctly the I/O
configuration parameters complying with the real modules that shall be mounted and operated.
