Siemens 6ES5721-0BB00 Plug-in Cable

The Siemens 6ES5721-0BB00 plug-in cable connects SIMATIC S5 programming devices to CPU modules. This cable carries programming data and power for direct communication links. It attaches directly to the AS511 port on S5 processors. You can use this cable as a direct replacement for worn or damaged programmer cables.

Detailed Technical Specifications

The Siemens 6ES5721-0BB00 plug-in cable measures 2.0 meters in total length. Its outer diameter reaches 5.5 mm across the shielding jacket. The cable weighs approximately 0.15 kilograms for easy handling. This assembly uses flexible PVC insulation for repeated bending.

Key hardware parameters include:

Complete Model: Siemens 6ES5721-0BB00
Cable length: 2.0 meters (6.6 feet)
Connector A: 9-pin SUB-D female (programmer side)
Connector B: 9-pin SUB-D female (CPU side)
Conductor count: 5 shielded conductors
Conductor gauge: 26 AWG stranded copper
Shielding: Braided copper plus foil layer
Voltage rating: 300 V maximum
Current rating: 1.0 A per conductor
Temperature range: -20°C to +80°C
Insulation material: PVC, flame-retardant
Connector housing: Molded PVC with strain relief
Compatibility: All S5 CPUs with AS511 interface

The Siemens 6ES5721-0BB00 plug-in cable stores no electrical charge whatsoever. Therefore, technicians can handle the cable without any safety precautions. The shielding provides excellent immunity against industrial electrical noise. Moreover, the molded connectors resist vibration and accidental pull forces.

Technical Parameter	Specification
Full Model Number	Siemens 6ES5721-0BB00
Cable Length	2.0 meters (6.6 feet)
Outer Diameter	5.5 mm
Weight	0.15 kg
Connector A (Programmer)	9-pin SUB-D female
Connector B (CPU)	9-pin SUB-D female
Conductor Count	5 shielded conductors
Conductor Gauge	26 AWG stranded
Shielding Type	Braid + foil
Voltage Rating	300 V
Current Rating	1.0 A per conductor
Temperature Range	-20°C to +80°C
Insulation	PVC flame-retardant

Application and Installation

The Siemens 6ES5721-0BB00 plug-in cable links PG programming devices to S5 CPUs. This cable also connects to OP text displays for data transfer. It carries both the AS511 data signal and 5 V power. Consequently, the programming device needs no separate power supply for communication.

Signal Integrity and Reliability

This cable rejects electromagnetic interference from motors and drives. Its dual shielding reduces crosstalk between adjacent signal pairs. The Siemens 6ES5721-0BB00 includes a drain wire for chassis grounding. Therefore, you achieve reliable programming communication in noisy industrial environments.

Always power down both devices before connecting or disconnecting this cable. Tighten the locking screws on both connectors securely. The cable features a flexible jacket for tight bend radius installations. Furthermore, the molded strain relief prevents wire breakage at the connector entry points.