-1个RS232(PORT3)+1个RS485(PORT4)扩展模块1埠10 Base T 乙太网路界面(Ethernet)之扩充通讯板1埠100 Base T 乙太网路界面(Ethernet)之扩充通讯板1埠CANopen 通讯板1埠RS232(Port1)+1埠RS485(Port2)之扩充通讯板1埠RS232(Port2)之扩充通讯板1埠RS485(Port2)之扩充通讯板2个RS485通讯口(Port3+Port4)扩展模块2埠RS232(Port1+Port2)之扩充通讯板2埠RS485(Port1+Port2)之扩充通讯板