CTD Counter - English
- subtitles off
- captions off
- Questions posted on Forums
- OpenPLC with LDmicro Tutorials - English
-
How relay got energized?
Madam/sir,Q1)How the Internal Relay Coil is energized by Up & Down Counter viz. CTU & CTD even in the initial state when neither XUp nor XDown is Pressed or say their initial states are 0?Q2)Can we compare an Instruction with a constant or variable in any of the compare or such kind of instruction, such as been done with CCounter? I want to mean that CCounter is an Instruction whereas Counter is the name given to it, so, can we directly compare some variable or constant of an instruction (say compare instruction's 0 (constant)) with another instruction (I am not saying variable or constant of the second instruction, I am saying the instruction itself, say CCount) directly, as being shown in the tutorial?
05-06M 20-30S sc256356
Answer last updated on: June 15, 2022, 3:38 p.m.
-
Initial sate of RRelay.
Why the initial state of Rrelay is 1 even if all other instructions have the initial state 0?
03-04M 40-50S sc256356
Answer last updated on: June 13, 2022, 12:17 p.m.
-
1Overview of OpenPLC with LDmicro
-
2Installation of LDmicro on Linux
-
3Installation of LDmicro on Windows
-
4Introduction to LDmicro
-
5Simulation and Compilation
-
6OpenPLC Mainboard
-
7Programming OpenPLC
-
8OpenPLC Traffic Light and Switchboard Modules
-
9Normal Coil
-
10Normal Contact
-
11Negated Coil and Negated Contact
-
12Implementing NOT and AND logic gates
-
13Implementing OR and XOR logic gates
-
14Internal Relay and Output pin
-
15SET and RESET Coils
-
16OneShot Instructions
-
17Arithmetic Instructions
-
18Move Instruction
-
19Compare Instructions
-
20TON and TOFF Instructions
-
21RTO Timer Instruction
-
22CTU Counter
-
CTD Counter
-
24CTC Counter
-
25OpenPLC Heater module
-
26A to D Converter Read Instruction
-
27PWM Instruction
Questions posted on ST Forums:
556 visits
Outline:
Connection of SMPS and USBasp to the Mainboard Insert a Contact and a Coil Insert one more Contact parallel to existing Contact To the right of first Contact, insert a CTU To the right of second Contact, insert a CTD Name both counters with same name Insert a rung below Insert a GEQ and a Coil in the new rung Real-time simulation of CTD Make hardware connections for the CTD using Traffic light module and Switchboard module Working of CTD on hardware Where can an up-down counter be used?
Width: | 826 | Height: | 628 |
---|---|---|---|
Duration: | 00:10:03 | Size: | 4.6 MB |
Show video info