Optional Memory FP02 − 62.1 Parts and Terminology2.1.1.1 Status Indicator LEDsThese LEDs display the current mode of operation or the occurrence of an error.LED DescriptionRUN (green) Illuminates when in the RUN mode and indicates the execution of a program. It flashes duringforced input/output.PROG. (green) Illuminates when in the PROG. mode and indicates that operation has stopped.ERROR/ALARM(red)Flashes when an error is detected during the self-diagnostic function. Illuminates if a hard-ware error occurs, or if operation slows because of the program, and the watchdog timer isactivated.2.1.1.2 Mode SwitchThis switch turns ON and OFF (RUN/PROG.) the operation of the FP0. The FP0 canalso be turned ON and OFF by the programming tool.Switch position Operation modeRUN (upward) This sets the RUN mode. The program is executed and operation begins.PROG. (downward) This sets the PROG. mode.When performing remote switching from the programming tool, the position of the modeswitch and the actual mode of operation may differ. Verify the mode with the statusindicator LED. Otherwise, restart the FP0 and change the mode of operation with themode switch.2.1.1.3 Tool PortThe tool port is used to connect a programming tool.Pin assignment3451 2AbbreviationSGSD (TXD)RD (RXD)+ 5 V—Pin no.32415
