A Activity diagram used in UML 6/9 and SysML B Bachman diagram Booch used in software engineering Block diagram Block Definition Diagram BDD used in SysML C Carroll diagram Cartogram Catalytic cycle Chemical equation Curly arrow diagram Category theory diagrams Cause-and-effect diagram Chord diagram Circuit diagram Class diagram from UML 1/9 Collaboration diagram from UML 2.0 Communication diagram from UML 2.0 Commutative diagram Comparison diagram Component diagram from UML 3/9 Composite structure diagram from UML 2.0 Concept map Constellation diagram Context diagram Control flow diagram Contour diagram Cordier diagram Cross functional flowchart D Data model diagram Data flow diagram Data structure diagram Dendrogram Dependency diagram Deployment diagram from UML 9/9 Dot and cross diagram Double bubble map used in education Drakon-chart E Entity-Relationship diagram ERD Event-driven process chain Euler diagram Eye diagram a diagram of a received telecommunications signal Express-G Extended Functional Flow Block Diagram EFFBD F Family tree Feynman diagram Flow chart Flow process chart Flow diagram Fusion diagram Free body diagram G Gantt chart shows the timing of tasks or activities used in project management Grotrian diagram Goodman diagram shows the fatigue data example: for a wind turbine blades H Hasse diagram HIPO diagram I Internal Block Diagram IBD used in SysML IDEF0 IDEF1 entity relations Interaction overview diagram from UML Ishikawa diagram J Jackson diagram K Karnaugh map Kinematic diagram L Ladder diagram Line of balance Link grammar diagram M Martin ERD Message Sequence Chart Mind map used for learning, brainstorming, memory, visual thinking and problem solving Minkowski spacetime diagram Molecular orbital diagram N N2 Nassi Shneiderman diagram or structogram a representation for structured programming Nomogram Network diagram O Object diagram from UML 2/9 Organigram Onion diagram also known as "stacked Venn diagram" P Package diagram from UML 4/9 and SysML Parametric diagram from SysML PERT Petri net shows the structure of a distributed system as a directed bipartite graph with annotations Phylogenetic tree - represents a phylogeny evolutionary relationships among groups of organisms Piping and instrumentation diagram P&ID Phase diagram used to present solid/liquid/gas information Plant Diagram Pressure volume diagram used to analyse engines Pourbaix diagram Process flow diagram or PFD used in chemical engineering Program structure diagram R Radar chart Radial Diagram Requirement Diagram Used in SysML Rich Picture R-diagram Routing diagram S Sankey diagram represents material, energy or cost flows with quantity proportional arrows in a process network. Sentence diagram represents the grammatical structure of a natural language sentence. Sequence diagram from UML 8/9 and SysML SDL/GR diagram Specification and Description Language. SDL is a formal language used in computer science. Smith chart Spider chart Spray diagram SSADM Structured Systems Analysis and Design Methodology used in software engineering Star chart/Celestial sphere State diagram are used for state machines in software engineering from UML 7/9 Swim lane Syntax diagram used in software engineering to represent a context-free grammar Systems Biology Graphical Notation a graphical notation used in diagrams of biochemical and cellular processes studied in Systems biology System context diagram System structure Systematic layout planning T Timing Diagram: Digital Timing Diagram Timing Diagram: UML 2.0 TQM Diagram Treemap U UML diagram Unified Modeling Language used in software engineering Use case diagram from UML 5/9 and SysML V Value Stream Mapping Venn diagram Voronoi diagram W Warnier-Orr Williot diagram Y Yourdon-Coad see Edward Yourdon, used in software engineering
Note on RS 485 Pinout markings: Sometimes a device will be marked with the polarity reversed from normal RS 485 standards where the Data A or TD(A) RD(A) line is ( ) and the Data B line or TD(B) RD(B) is ( ). In a system with 2 wire connections, try reversing the lines to see if the device will respond.
the RS485 bus if required. Alternatively the RS485 bus can be terminated externally. Twisted pair . Simple 4 wire multidrop RS485 network with signal ground . FarSync . td g. FarSync . FarSync . Master . This station can terminate the RS485 bus if required. Alternatively the RS485 bus can be terminated externally. Slave #2 . This station should not
RS 485 is set up for four wire communication by default. To connect a 2 wire device, you will need to short the transmit and receive signals together on the RS 485 port. Follow the instructions below. On the RS 485 connector, place jumper wires between TXD and RXD , and between TXD and RXD . Refer to the pins below based on your connector type.
How to connect 2 wire RS485 to 4 wire RS485. Our Device Servers support 4 wire RS485 but often, other devices runs on simplified 2 wire configuration. It is quite simple to make the connection between the two wiring, just connect the positive lines together and do the same for negative lines.
Sciences offers the CNV 100 RS 485 2 wire to 4 wire converter. This device is pre engineered to allow interoperability of 2 wire and 4 wire RS 485 devices in a variety of configurations. Summary The RS 485 standard defines a multi point data communications interface using a balanced pair (plus common) called “2 wire.” However, many
reversed from normal RS 485 standards where the Data A or TD(A) RD(A) line is ( ) and the Data B line or TD(B) RD(B) is ( ). In a system with 2 wire connections, try reversing the lines to
For 2 wire transmission, you will need to short the transmit (TXD) and receive (RXD) signals together on the RS 485 port. Refer to Set Up 2 Wire (Half Duplex) munication with RS 485 Port for the pinouts and more details.
RS485 needs 3 conductors and a shield. Many people say its a two wire network but it is not. Two conductors are used to carry the RS485 Differential voltage signal. The Shield is connected to earth ground at one end only and provides shielding against induced noise. So why the 3rd conductor ? The driver sends data by modulating the differential voltage.
Ideally an RS485 system consists of a single linear cable (no branches) with 120 ohm resistors connected across the 2 wires at each end of the cable. RS485 can handle speeds of over 10 Mbits per second and line lengths of over 1 km. If you are operating anywhere near these values you must arrange your wiring close to the ideal.