Safety device

A safety I/O terminal for connecting to an input device designed based on a safety standard, to which an on-off signal is input, connecting to a safety controller designed based on the safety standard via a network, and transmitting the on-off signal input from the input device to a communication master unit of the safety controller, comprising:

• one or more input terminals configured to be given the input signal from the input device compliant with the safety standard;
• a test terminal configured to be shared in two or more of a test out specification, a muting lamp specification, a power supply specification, a standard output specification, and a nonuse specification;
• a memory configured to store a specification setting regarding the test terminal, wherein the specification setting allows the safety I/O terminal to switch the structure of the one or more input terminals and test terminal in accordance with the input device to be controlled;
• and
• a microcomputer configured to switch processes regarding the test terminal in accordance with the specification setting in the memory wherein the processes include at least one of:
• stopping use of an output from the test terminal when the specification setting is specified as the “nonuse specification”,
• outputting a signal regarding operating conditions of the safety I/O terminal from the test terminal when the specification setting is specified as the “standard output specification”,
• outputting power voltage from the test terminal when the specification setting is specified as the “power supply specification”, and
• outputting a signal to a muting lamp from the test terminal when the specification setting is specified as the “muting lamp specification”.

A safety device, comprising:

• at least one of an input unit having one or more input terminals and an output unit having one or more output terminals;
• a testing unit having one or more test terminals;
• a rewritable nonvolatile memory configured to store setting information of a terminal specification which can be set from outside via a tool, wherein the setting information allows the safety I/O terminal to switch the structure of the one or more input terminals, the one or more output terminals and the one or more test terminals in accordance with an input device to be controlled, and wherein
• the terminal specification of the one or more test terminals included in the testing unit is determined in accordance with the setting information of the terminal specification wherein the terminal specification of the test terminal includes at least one of a test out specification, a muting lamp specification, a power supply specification, a standard output specification, and a nonuse specification, and
• wherein the setting information is configured to perform at least one of:
• stopping use of an output from the test terminal when the specification setting is specified as the “nonuse specification”,
• outputting a signal regarding operating conditions of the safety I/O terminal from the test terminal when the specification setting is specified as the “standard output specification”,
• outputting power voltage from the test terminal when the specification setting is specified as the “power supply specification”, and
• outputting a signal to a muting lamp from the test terminal when the specification setting is specified as the “muting lamp specification”.