How do you test a Profibus cable?
Probably the best way to physically check a Profibus cable is to use the Siemens BT200 tester , which will test for Cable A/B breaks , cable A/B being swopped , cable shield breaks and incorrect terminations etc.
How does Profibus cable work?
The PROFIBUS DP network is a multi-master token network – that means when there are two or more masters in the system, a token giving the right to talk to the field devices is passed from master to master, and each gets a share of the communication time.
What is Profibus DP cable?
Profibus cables are automation cabling for industrial fieldbus fast-connect-type systems, particularly developed for process applications. They offer excellent electrical transmission performance for their respective Decentralised Peripherals (DP) and Process Automation (PA) applications.
What is a Profibus Terminator?
The T1 Terminator provides active termination for PROFIBUS segments which are based on RS 485. This component enables you to switch off or remove the last devices on a segment without disturbing the bus communication. This way you reduce the risk of faults and thus potential downtime.
What voltage is Profibus?
Both the slave and master PROFIBUS DP test specifications state that the differential voltage between A- and B-lines shall be a minimum of 4 V and a maximum of 7 V. The signals of the A- and B-line are measured against DGND. The difference of the amplitudes shall be less than 0.5 V.
How old is Profibus?
Released in 1993, Profibus, or “ PROcess-FIeld-BUS,” is a tried and true industrial communication protocol. With over 50 million devices installed by the end of 2017, it is a well established technology used in many different control applications.
How do you communicate with PROFIBUS?
The communication basis for PROFIBUS lies in the cyclic data exchange between PLCs (masters) and devices (slaves). PROFIBUS components communicate using the PROFIBUS DP (Decentralized Periphery) communication protocol, which is the same for all applications and which allows cyclical and acyclical communication.
How many variants are there for Profibus DP?
PROFIBUS has two variants: PROFIBUS DP and PROFIBUS PA. The PROFIBUS DP is one of the 2 variants that is used most frequently.
How long can a Profibus cable be?
1200 meter
The corresponding maximum cable length allowed per segment is established in the PROFIBUS standard: 9.6 kbps = 1200 meter. 19.2 kbps = 1200 meter.
What is an active terminator?
An active terminator is a type of single ended SCSI terminator with a built-in voltage regulator to compensate for variations in terminator power.
