指的是在PLC电源模板上的串口连接器上的接口，当串口不工作时此灯熄灭.P1灯闪烁表明数据正在通过串口1的RS-232接口传输数据，当串口不工作时此灯熄灭.P2灯闪烁表明数据正在通过串口2的RS485接口传输数据，当串口不工作时此灯熄灭.

CUSTOM MOTORS INC CMR23M-C RESOLVER CABLE,

SIEMENS HF361 30 Amp FUSIBLE SAFETY SWITCH, NIB

ALLEN BRADLEY 150-N84L SERIES A 480 VAC SMART MOTOR PRO

TURCK BI 5U-MT18H-AP6X2-?H1141/S395/S158?9, PROX SWITCH,

ASCO RED HAT 8210G94 SOLENOID VALVE, NNB

ASCO RED HAT 8340G001 17.1W 1/4″ SOLENOID VALVE, NIB

THK HSR25RYR1SS (GK) LINEAR MOTION BEARING BLOCK, NIB S

SUN HYDRAULICS FEJ 9LD7 PRESSURE REGULATING RELIEF VALV

SUN HYDRAULICSRSDC LAN ECJ TWO PORT PRESSURE REGULATING

SUN HYDRAULICS BBY-90X5 REDIRECT VALVE, NIB

SMC AR50-N10-Z MODULAR STYLE REGULATOR, NNB

SQUARE D 9012 GAW-24 PRESSURE SWITCH, NIB

MICROSCAN NER-010605811 RING ILLUMINATOR, NIB

TURCK RD15E1 JUNCTION BOX, NNB