Siemens S5 PLC Programming Cable: Classic PC Connection Solution

• Direct Connection: Links your PC directly to SIMATIC S5 PLCs for programming.
• Correct Interface: 15-pin PLC connector to standard 25-pin PC serial port.
• Practical Length: 3.2 meters provides flexible placement in control cabinets.
• Legacy Support: Essential for maintaining and programming classic S5 automation systems.
• Simple Setup: Plug-and-play connectivity for quick commissioning.

Product Overview

The Siemens 6ES5734-1BD20 is the original programming cable for the SIMATIC S5 PLC series. This S5 734-1 connection cable creates a direct data link between your computer and the PLC. It is the reliable tool for transferring programs, monitoring processes, and troubleshooting in systems using Siemens' classic S5 controllers.

Technical Specifications

Brand & Part Number: Siemens 6ES5734-1BD20

Cable Type: Plug-in Programming / Communication Cable

Compatible System: SIMATIC S5 Series PLCs

PLC Connector: 15-pin (AG 15-pole)

PC Connector: 25-pin (Sub-D, for serial COM port)

Cable Length: 3.2 meters

Product Family: SIMATIC S5 734-1

Primary Function: PLC programming, data transfer, and online monitoring

Interface Type: Serial (RS-232/TTY)

FAQs

Which software do I use with this cable?

You use it with Siemens STEP 5 programming software on a PC with a standard serial (COM) port to connect to S5-115U, S5-135U, and S5-155U PLCs.

My modern laptop doesn't have a 25-pin port. Can I still use it?

You will need a USB-to-Serial adapter that provides a genuine 25-pin male COM port. Not all USB adapters work reliably with industrial programming software, so choose a quality brand.

Is this cable only for programming?

No, it also enables online monitoring of the PLC program while the machine is running, variable forcing for testing, and uploading/downloading of the complete machine program.

What PLC models is it compatible with?

It is designed for SIMATIC S5 series PLCs like the S5-115U, S5-135U, and S5-155U that have the corresponding 15-pin programming port.

Why is the specific cable length important?

The 3.2m length is long enough to reach from a control cabinet to a service trolley or laptop placed nearby, but not so long that signal quality degrades significantly for reliable communication.

Warranty & Shipping

This product is covered by a 12-month functionality warranty. We offer reliable shipping options with FedEx, UPS, and DHL for fast delivery.

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