Silver Series Installation and Operation Manual, Rev B ... - Watlow

Connect the HMI to the PLC or Controller 17Chapter 3 – Connect the HMI to the PLC or ControllerThe HMI5000 Series family of HMIs can connect to one, two, or more PLC/controllers. This is accomplished via two 9-pin D-sub serial communications connectors (Port A and Port B) and one Ethernet port. Each PLC/Controller has itsown wiring requirements. Maple Systems offers HMI-to-PLC/Controller communication cables for mostPLC/Controllers that are built to any length and tested for high reliability. The HMI5000 Series family has threesoftware controlled communications ports (COM1, COM2, and COM3) located on two physical connectors,designated as Port A and Port B (see Figures 1 and 2, below).Figure 1: COM Ports – Rear ViewFigure 2: COM Ports – Bottom ViewThe three software controlled ports are COM1, COM2, and COM3. Each software controlled communications port canonly be selected for one communication type. Once a communication type is selected for one of these softwarecontrolled ports, that port cannot be used for another communication type. Each of these communication ports hasbetween one and three communication types. COM1 can be RS232, RS485 4-Wire, or RS485 2-Wire. COM2 is strictlyRS232. COM3 is either RS232 or RS485 2-Wire. COM1 cables are readily available for purchase from Maple Systems.COM2 and COM3 cables are custom-made according to wiring diagrams that can be found on Maple Systems' website. Connecting multiple PLCs and controllers may require a splitter. The HMI5043N/T only has one serial port (DE9P Male) with only COM1 and COM3 available. The HMI5056Nhas two serial ports but only COM1 available.0600-0069-0000 Rev. B