#Siemens simatic s7 300 sf light series
The EM277 PROFIBUS-DP module allows connection of S7-22x series CPUs (6ES7-22x-xxx21-xxxx and later) to PROFIBUS-DP. PROFIBUS slave CPU 215 or CPU 222 or CPU 224. CPU connected to modules by flexible integrated ribbon cables (S7-22x series) and by bus connectors (S7-21x series). Each CPU available in either 24 VDC or 120 VAC - 230 VAC supply voltage versions. Performance-graded range of CPUs (up to 8KB memory, 8-40 integrated I/O points onboard the CPU). Modular small control system for the lowest performance range. PROFIBUS DP/PA is used to link field devices such as distributed I/O stations or drives with automation systems such as SIMATIC S7 or PCs. for process and field communication in cell networks with a small number of stations and with field devices Offers openness for interfacing to standardized non-Siemens components - specification of the standards for the physical characteristics of the bus and the access procedure specification of the user protocol and the user interface High-performance tools such as STEP 7 and COM PROFIBUS are available for configuring and parameterizing the I/O devices. High security of investment since existing networks can be extended without any adverse effects. Continuous monitoring of network components through a simple and effective signaling concept. Fast assembly and startup on site with the help of the Fast Connect wiring system. This results in user-defined communication relationships that are very versatile, simple to implement, and easy to change. Configuration, commissioning, and troubleshooting can be carried out from any side. PROFIBUS is a powerful, open, and robust bus system, which guarantees trouble-free communication. Messages logged there. These will be invaluable in determining the location ofĪ fault, and in correcting it. 
You will be able to open the diagnostic buffer of the CPU to collect the This was extracted from the following manual:Īccess to an online connection to the CPU (through Step 7, either V.5 or TIA Portal), When it appears along with a BFx fault, it often means that your program is trying to access data from one of the faulty remote modules on the communications network, so this data is not available to the CPU.Ī (brief) descritpiton of the LEDs is available in the attached picture. The SF (system fault) LED active means that a fault has been located on the CPU hardware or software. You should have a diagnostic LED light up on the lost module at the same time, which could help detect the source of the fault. These messages will log the events and give information on the source of the faults.īasically BF1 and BF2 (Bus Fault 1 and 2) indicate the loss of a remote IO station on Profibus or Profinet, the number indficates the CPU interface that is affected (no.
The appearance of a diagnostic LED is combined with a message entry in the diagnostic buffer of the CPU, and possibly in the diagnostic buffer of the offending module or remote interface, in the case of a Profibus/Profinet error. This could be related to a programming issue, a hardware defect or a lost communication with a remote Partner.
A diagnostic LED lights up when the CPU's OS detects an event that does not correspond to its normal operational settings.
0 kommentar(er)
