Sola/Hevi-Duty: MultiLink Software - Building your cable.


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Home > Products > Uninterruptible Power Systems > Software > Cable Building

MultiLink Software: Cable Building

Note: If you want to purchase a cable instead of building your own, click here.

On this page: Determining the connector your UPS needs,
                    Determining the connector you computer needs,
                    Determining the length of cable needed,
                    Making the list,
                    Purchase the parts,
                    Assembly,
                    Contact Closure Connections

Step 1: Determine the connector your UPS needs

Examine the back of your UPS. Does it have a 9 or 25 socket connector? This connector should be a socket connector and look similar to one of the diagrams below. This means you will need to purchase a pin connector.

Note: In the diagrams below, a solid dot denotes a socket hole.


Figure 1: DB9 Socket	Figure 2: DB25 Socket

Step 2: Determine the connector your computer needs

Check the requirements specific to each operating system below.

Examine the back of your computer. Does it have a 9 or 25 pin connector? Is it a pin or socket? See the figures below to help you. You will need to purchase the opposite type of connector.

Note: In the diagrams below, a solid dot denotes a socket and a circle denotes a pin.


Figure 3: DB9 Pin	Figure 4: DB9 Socket


Figure 5: DB25 Pin	Figure 6: DB25 Socket

Step 3: Determine the length of the cable you need

The cable/wire you buy will be flat "silver" network-connection wire. Is the cable you need 6 feet, 15 feet, or 25 feet? Avoid going over 25 feet.

Step 4: Make a list

Write the connectors and cable length you need down on a piece of paper.

Step 5: Purchase the parts

Go to your local electronic parts store and purchase the necessary connectors with RJ12 or RJ11 receptacles and the necessary cable. Remember to match the wire with the connectors. For example, if you get RJ11 or RJ12 connectors then you need flat wire with RJ11 or RJ12 connectors.

See below for a graphic image of the parts you may get.

Figure 7: Example Parts

Step 6: Assembly

When you have the items you need you can begin to assemble the cable. Table 1 below defines the proper pin positions.

UPS Interface Port DB PINS	Comments	Computer Interface Port DB9 SOCKET
2		2
3		3
5		5
Hood Shield	Use Cable Shield- Shield connected on one side only	Not Connected
Table 1: Serial Communications

1. Assemble the UPS connector

First assemble the UPS connector using the wire colors as shown above in Table 1 - Pin Wire Connections. Figure 8 - DB25 Connector below, shows a possible connector to use. Figure 9 - Pin Wire Insertion, shows some of the pin wires inserted into the connector.

Figure 8: DB25 Connector

Figure 9: Pin Wire Insertion

2. Assemble the computer connector

Then assemble the computer connector using the wire colors as shown in
Table 1 - Pin Wire Connections.

3. Assemble the connector housing

When these connectors are complete assemble the housings and connect the phone wire.

Figure 10: Inserting the wire

4. Connect the cable to the computer and UPS

Contact Closure Connections

UPS Interface Port				Computer Interface Port
DB25	DB9	FUNCTION	WIRE	SIGNAL	DB9	DB25
16	9	ON Battery	RED	<<< TX	3	2
17	8	ON Battery	GREEN	RX >>>	2	3
11	1	LOW Battery	BLACK	<<< RTS	7	4
9	7	LOW Battery	YELLOW	DCD >>>	1	8
7	5	UPS Ground	If the cable has a shield, connect shield at UPS	x	Not Connected	Not Connected
19	4	UPS Off	Must Not Be Connected	x	Not Connected	Not Connected

Purchasing a Cable

If you decide to purchase a cable instead of building one, contact your local Sola/Hevi-Duty Representative, Value-Added Reseller or distributor and ask to purchase a MultiLink UPS cable.

Cable part numbers are as follows:

Description	Sola/Hevi-Duty Part Number
10 Foot cable for DB 9 pin UPS models (Contact Closure)	SML9P9S
10 Foot cable for DB 9 pin UPS models (Serial)	SML39P9S