Panasonic FP2 Manual

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Panasonic FP2 Manual Manual pdf 31 page image

RS232C Port WiringFP2−CCU4 − 34.1 RS232C Port Signals4.1 RS232C Port SignalsPin layoutPin No. Signal Mnemonic Signal direction1 Frame Ground FG —2 Send Data SD Unit → External device3 Receive Data RD Unit ← External device4 Request to Send RS Unit → External device5 Clear to Send CS Unit ← External device6 (Not used) — —7 Signal Ground SG —8 Receive Carrier Detect CD Unit ← External device9 Equipment Ready ER Unit → External deviceFG (Frame Ground)This is connected to the FG terminal on the power supply unit, along with the connectorhousing, through the backplane.SD (Send Data)This signal is used when data is being sent to a partner device. With the ComputerCommunication Unit, the SD (green) LED among the operating status LEDs flashes ifthe data has been sent properly.RD (Receive Data)This signal is used when data is being received from a partner device. With the ComputerCommunication Unit, the RD (green) LED among the operating status LEDs flashes ifthe data has been received properly.RS (Request to Send)This signal requests that data be sent from a partner device. With the ComputerCommunication Unit, the RS signal is constantly on.CS (Clear to Send)This signal goes on when the partner device is ready to receive data.With the FP2 Computer Communication Unit, input to this terminal is invalid, so noconnections are necessary.SG (Signal Ground)This signal provides a common reference potential for circuits connected to theComputer Communication Unit and any external devices.next page9−pin internal