How do I prevent send Modbus multiple times?

[bgreer5050]

I want to send a Modbus message once every 10 seconds. I have a timer T4 with a set point of 11. The way I am sending the Modbus message now is when...

[ROleskie]

I have a Do-More PLC and an EA9 C-More connected via Ethernet, and working fine under normal conditions. I leave the C-More powered up when the main power...

[Swervomotor]

Good day,

I have an Epson robot controller with an Ethernet/IP Master Card, I need to connect to a PLC to run conveyor/escapement/feed systems....

[dferguson]

How do you communicate to a C More EA9 from a Schneider Modicon M241 thru ethernet? i can't find any info on this. Communication and tag set-up for e...

[James_wolfpack]

Hi,

I'm developing a program to connect my 6 Mitsubishi VFDs to communicate with Productivity P2000 PLC. BUT none of VFDs is communicating...

[myfarm]

I want to get data from my DL06 into Microsoft Excel. The DL06 will be on Ethernet. By data I mean time stamps of events, values of timers and counters....

[maxud1987]

Hello, I am trying to use the RS-232/RS-485 port to talk to a series of GS2 drives. The way my system is setup is described below. I am using a ZL-CDM-RJ12X10 module from AD where th...

[Mvlawn]

I'm trying to communicate with an Opto 22 LED Dimmer. The Opto 22 uses 485/ASCII or 485/Optomux protocol. We are using ASCII. I set the Opto 22 up using the dip...

[Garry]

I have just finished a blog post in which we have installed a USB-485M adapter. Here is some of the post... The USB-485M is a 2-wire USB to RS-485 serial communication adapter for RS485 use. It does not require an external power supply or complicated...

[cplummer]

I am trying to send Binary data streams through the serial port. Has anyone done this?

[Hank Venture]

Hello. I am using a CLICK PLC to automate a system consisting of an electric gripper and a linear rail. It will be integrated into a pre-existing system of linear rails which are controlled in Labview....

[jayjohnsonuga]

The scenario is we have a bar code scanner, Click PLC(c0-00dd2-d), wireless serial device server, and cnc control. The wireless serial device server has two serial ports. One is used for...

[entinterco]

I have a lot of drives to change the speed regarding the setup in a production line, and I have the 5/05 CPU that is ready for MODBUS TCP. So I Wonder if it is the best way to communicate,...

[BonsalTech]

Has anyone got the CLICK PLC to communicate with Lookout Direct? Im using the rs232 to usb cable from the CLICK to PC. I double checked all settings when defining LINK PORT2 baud rate: 38400 Address: 1 Parity bit: odd Bits: 8 Stop ...

[entinterco]

I'm using a 10" C-More on ethernet, communicating with a AB SLC-500 5/03. Usually, when i trigger a pushbutton on the C-More, it takes like 2-5 seconds to turn an output, response time that I found to be on the long side. But after a wee...