Library manual M238 system functions | 2 MB - BERGER - POSITEC

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Glossary BOOTP BYTE CAN CANopen CFC controller The Bootstrap Protocol is a UDP network protocol that can be used by a network client to automatically obtain an IP address (and possibly other data) from a server. The client identifies itself to the server using the client’s MAC address. The server— which maintains a pre-configured table of client device MAC addresses and associated IP addresses—sends the client its pre-configured IP address. BOOTP was originally used as a method that enabled diskless hosts to be remotely booted over a network. The BOOTP process assigns an infinite lease of an IP address. The BOOTP service utilizes UDP ports 67 and 68. When 8 bits are grouped together, they are called a BYTE. You can enter a BYTE either in binary mode or in base 8. The BYTE type is encoded in an 8-bit format that ranges from 16#00 to 16#FF (in hexadecimal format). C The Controller Area Network protocol (ISO 11898) for serial bus networks is designed for the interconnection of smart devices (from multiple manufacturers) in smart systems for real-time industrial applications. CAN multi-master systems ensure high data integrity through the implementation of broadcast messaging and advanced diagnostic mechanisms. Originally developed for use in automobiles, CAN is now used in a variety of industrial automation control environments. CANopen is an open industry-standard communication protocol and device profile specification. The Continuous Function Chart (an extension of the IEC61131-3 standard) is a graphical programming language that works like a flowchart. By adding simple logicals blocks (AND, OR, etc.), each function or function block in the program is represented in this graphical format. For each block, the inputs are on the left and the outputs on the right. Block outputs can be linked to inputs of other blocks in order to create complex expressions. A controller (or “programmable logic controller,” or “programmable controller”) is used to automate industrial processes. 82 EIO0000000364 04/2012
expansion bus E Glossary The expansion bus is an electronic communication bus between expansion modules and a CPU. expansion I/O module An expansion input or output module is either a digital or analog module that adds additional I/O to the base controller. FBD firmware Function Block F A Function Block Diagram is a graphically oriented programming language, compliant with IEC 61131-3. It works with a list of networks whereby each network contains a graphical structure of boxes and connection lines which represents either a logical or arithmetic expression, the call of a function block, a jump, or a return instruction. The firmware represents the operating system on a controller. (FB) A Program unit of inputs and variables organized to calculate values for outputs based on a defined function such as a timer or a counter. Function Block Diagram language (FBD) A function block diagram describes a function between input variables and output variables. A function is described as a set of elementary blocks. Input and output variables are connected to blocks by connection lines. An output of a block may also be connected to an input of another block. GVL G The Global Variable List manages global variables that are available in every application POU. EIO0000000364 04/2012 83
Page 1 and 2:
EIO0000000364.06 Modicon M238 Logic
Page 3 and 4:
Table of Contents Safety Informatio
Page 5 and 6:
Important Information NOTICE Safety
Page 7 and 8:
At a Glance Document Scope Validity
Page 9 and 10:
Overview Modicon M238 Logic Control
Page 11 and 12:
Understanding System Variables Intr
Page 13 and 14:
Using System Variables Introduction
Page 15 and 16:
1.2 PLC_R and PLC_W Structures Over
Page 17 and 18:
%MW Var Name Type Comment 60024 i_w
Page 19 and 20:
1.3 SERIAL_R and SERIAL_W Structure
Page 21 and 22:
SERIAL_W[0..1]: Serial Line Read /
Page 23 and 24:
Overview Modicon M238 Logic Control
Page 25 and 26:
GetBatteryLevel: Returns Remaining
Page 27 and 28:
GetEventsNumber: Returns the Number
Page 29 and 30:
Example M238 System Functions This
Page 31 and 32: GetLastStopCause: Returns the Cause
Page 33 and 34: GetLocalIOStatus: Returns the Embed
Page 35 and 36: GetPlcFault: Returns Detected Error
Page 37 and 38: M238 System Functions I/O Expansion
Page 39 and 40: Example M238 System Functions To ob
Page 41 and 42: M238 System Functions GetShortCutSt
Page 43 and 44: IsFirstMastCycle: Indicates if Cycl
Page 45 and 46: M238 System Functions IsFirstMastWa
Page 47 and 48: InhibitBatLowLed: Disables or Re-en
Page 49 and 50: SetRTCDrift: Adjust the Real Time C
Page 51 and 52: Overview Modicon M238 Logic Control
Page 53 and 54: PLC_R_STATUS: Controller Status Cod
Page 55 and 56: PLC_R_BOOT_PROJECT_STATUS: Boot Pro
Page 57 and 58: M238 PLC System Library Data Types
Page 59 and 60: 3.2 System Functions Data Types Ove
Page 67 and 68: HOUR: SetRTCDrift Function Hour Par
Page 69 and 70: Modicon M238 Logic Controller EIO00
Page 71 and 72: Overview Modicon M238 Logic Control
Page 73 and 74: How to Use a Function or a Function
Page 75 and 76: Function and Function Block Represe
Page 77 and 78: How to Use a Function or a Function
Page 79 and 80: Function and Function Block Represe
Page 81: 1-phase counter 2-phase counter BOO
Page 85 and 86: Modbus NEMA PLC PLI POU PTO M The M
Page 87 and 88: U unlocated variable An unlocated v
Page 89 and 90: Modicon M238 Logic Controller Index
Page 91 and 92: System Variable PLC_R, 16 PLC_W, 18
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Library manual M238 system functions | 2 MB - BERGER - POSITEC

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