This is a very simple ladder program that shows the basic steps to enable, zero and move a 1S servo using the NJ controller.
This is a short bit of sample code using Socket Service function blocks to read and write data from / to a V680S RFID tag using the Modbus TCP (-ETN) version of the V680S.
This is a quick bit of code to show how a recipe function might be written if one were to do it in the PLC rather than the HMI. This is the basic building blocks with which a program could begin to be written. The BSET instruction combined with the indirect addressing method demonstrated would allow for a delete function. Copy and other functionality could be added using similar concepts.
FB to provide a simple long timer with time remaining outputs. Time can be entered in HMS (or just mins for example).
Time remaining is normalised to HMS though.
Uses 2 other FBs. Create instances of HHMMSS as required.
By ne0tecThere was already a nice FB made available by PMCR, but it had little restriction which I didn't liked. So I made this one. This FunctionBlock enables you to set a password like '1234OOPS' rather instead of being limited by HEX digits (0-9..A-F)
So it's kinda a alternative to the one PMCR made available.
I also added another functionality. This Function Block is configurable to work in automatic mode (password will be set on certain PLC hour) and/or manual mode, where you can give a trigger to the Function Block which will set the password (as example, when you're finished with online editing you can trigger the FB)
I think it will explain itself. If you have questions, you can PM me.
By pat.staveLowpass filter for Omron PLCs.
Only tested on CJ-series CPU. Use at own risk!
Many thanks to Peter Nachtwey @ PLCS.net for providing the mathematical formula.
Unfiltered = raw unfiltered value in INT.
TC = Time constant tau, given in seconds.
Filtered = Filtered value in INT.
FilteredReal = Filtered value in REAL.
- The FB can be duplicated.
- The FB can only be used in program parts that are scanned every CPU cycle, as it relies on the "P_Scan_Time_Value" variable.
According to the working principles of a lowpass filter, it will take the filtered value tau amount of seconds to reach 63% of the unfiltered value.
The value will reach within 1% of the unfiltered value in approx 5x tau.
By PMCRDrop in code for Single Master and up to 30 Slave PLCs on FINS Ethernet.
The Master PLC can be a CP1L-E, CJ2M, CJ2H, CS1, or any PLC capable of sending FINS commands.
Originally designed to share data across a network of CP1L-E PLCs.
Each PLC shares 100 words in each direction with the master PLC.
The reads can be setup to read as fast as possible, or at a given interval.
The writes can be change of state (COS) driven, as fast as possible, or at a given interval.
.pdf manual included.
Function to scale an analog input. Allows input of lower and upper values for the range to which you are scaling, input for the maximum value of the analog input channel and the channel itself. There are three outputs that provide the scaled value in three formats: Real, Integer and BCD.
By PMCRExample code to read and write integer and floating point data to and from CompactLogix, ControlLogix, and MicroLogix 1400 using EtherNet/IP.
This works with Omron PLCs using CJ1W-EIP21 or CS1W-EIP21 EtherNet/IP modules, or CJ2H-xxx-EIP or CJ2M-CPU3x PLCs with built in EtherNet/IP.
By PMCRThis is a Function Block to set a password in a PLC.
It can be used to automatically set a password, so you don't have to do it from CX Programmer.
By PMCRThis application is a ready to use Modbus RTU master for CP1L, CP1H, CJ1, CJ2, and CS1.
The user creates 'tables' of items to read and write. The ladder code automatically performs the communications as setup by the user.
The CJ1 / CJ2 / CS1 solution requires the use of a Protocol Macro on an SCU31 / SCU41 module, and the CP1L / CP1H function uses the Serial Gateway function of the CP1H / CP1L on a CP1W-CIF11 or CIF12.
Sample NS screens are provided with an Omron 3G3JX inverter as an example Modbus RTU slave.
Updated 1/7/2011 to include 3G3MX2 screen for NS, and to include CJ1W-SCU22,32,42 in documentation.
Updated 9/19/2012 to support 2 ports on an SCU card (CS, CJ1, CJ2) or 2 ports on a CP1L / CP1H.
Do more with less.
Write PLC code for an ancient Telesis pinstamp printer
from the early 1990's, replacing a flaky ink jet printer
that never worked properly
Existing control system is an AB SLC500 PLC controlling
a sixteen station assembly line.
An AB basic module was used to communicate to the ink jet.
Our options were:
1) Modify basic module code to suit ancient pinstamp
2) Find another way of doing it since we were in a hurry
and didn't have enough experience with the AB system
to do it in time.
We opted to take an existing OMRON CQM1 PLC that we had
gathering dust in the corner, and write code for the pinstamp
Our part model and reject codes would be sent from the AB
discretely as binary inputs to the CQM1
Using the CQM1 RS-232 port, the Telesis functions strictly
as a printer with no confirmation signals sent back to the CQM1
Having installed a clock module in the CQM1 we were able to extract
the Julian day and year and print it along with the model # and
reject code .
Not exactly the finest example of modern technology, but it
Who said that OMRON and AB can't get along!
P.S. - DM memory saved in project!
By aboon78FB will output time different in btw system date/time [PLC] and input date/time [external]. Different time range from 0~9959 minutes. 9960~9999 is allocated for error code.
By neilr216OMRON CS1
This is an example of a sequencer using a reversible shift register instruction
Easy to troubleshoot because you can see what step it is on when the sequence stops for whatever reason.
Easy to add steps and not too bad to insert steps.
This program example shows the ease with which you can move to a specific step in the sequence after an alarm or stoppage.
Ideally suited to multiple Omron inverters connected on Modbus RTU network and where the Omron FB is too memory hungry.<br />Reads <u>upto</u> 16 registers from register 20 and writes to two registers (Fixed at 1 and 2). <br /><br />Set the serial port to Serial Gateway and set the baud rate to match the inverters. Inverter default is 81N. In the V1000 set H5-01 to the address. It must start at 1 and have no gaps.<br />The baudrate works upto 115200 (with V1000)<br /><br />Data format suits V1000 F7 E7. Don't use for V7 or J7.<br /><br />Data is only written on a change. The change is managed in the PLC NOT in the inverter. Data is read sequentially from node 1 to 'MaxNodes'.<br /><br />Not tested on CP1L-L (one serial port version). I think its Easy modbus addresses are different to two port versions.<br /><br />You can choose addresses within CIO only.<br /><br />Refer to any inverter manual for modbus addresses.
Edit: the CP1L 14/20 use port two EasyModbus addresses. I think you can select Port 2 but set port 1 to Serial Gateway. Can someone try this??
By beegeeThis is an example how to change the port settings:
in the example it is triggered by dip switch 6 (free use) and it changes the speed from 115200 for th HMI to 9600 for the modem. You could completely change the setup: check manual W393 section 7 PLC setup area
Word 160 in the setup is here D6000 for the standard comms and D6010 for the high speed
By beegeeexample of logging on a machien and writing it to file on a regular basis
By aboon78One of my recent project using OMRON CPM2A; with peocess states sequence logics programming concept. It is a systematic way of writing an "easy to maintenance" logics.
Example of using the Daylight Saving Time FB that i have previouly up loaded.....You need to have uploaded all of the associated FB's for this to work...
There is a pdf with the source code of the FB's in there as well. /thumbsupsmileyanim.gif style=vertical-align:middle emoid= border=0 alt=thumbsupsmileyanim.gif />
Hate BCD? Me too. Here's a timer FB that uses wait for it an INTeger preset.
Easier to scale gives you the time remaining done bit and a timing bit.
Use one of the system bits (P_1s etc.) to set the timebase.
Products arrive on conveyor irregularly pitched. Conveyor is equipped with an encoder or maybe a proxy looking at the sprocket.
This program captures the position and then multiple FB calls can be made to give an output at a distance from the input point maybe at a label inspction point or reject unit.
The Shift register readout FB can be called as many times as necessary.
The encoder can be connected to a high-speed counter meaning that the PLC scan need not 'see' every number i.e the encoder counter can be asynchronous.
I've simulated this in this program by incrementing the 'encoder' with a timed interrupt.
Adjacent to the product position stack is a product status stack so data can be written in at any point too e.g. I'm in front of the label detect sensor - if it's on then I can enter a '1' (say) into the stack. As the status is kept in a Word then upto 16 devices can write into the stack. Subsequent writes are ORed with existing data.
This can be achieved with FIFO but this method is more efficient as data is not actually moved just pointers to the data.
By NibrocExample Implementation of Modbus TCP Client using Standard Omron Function Blocks.
This function block will scale a value and output the rsult as an interger value and floating point (real) number. The result can be clamped or not clamped to the Min and Max range. Output bit indicating Over and Under range is also included.
By BobBOmron Modbus RTU slave ladder programs for C200HS Alpha CPM2 CQM1 CQM1H CS1 and CJ1 fot use with onboard serial port.
This protocol will talk to multiple Ranger Weigh Scales to display their respective display weights.