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Author Topic: Wx to broadcast address  (Read 15111 times)

AustinT

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Wx to broadcast address
« on: January 23, 2020, 03:05:23 PM »
Is it possible to use a broadcast for the wx command ? 
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RBPLC

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Re: Wx to broadcast address
« Reply #1 on: January 23, 2020, 05:48:16 PM »
Could you use Peerlink?
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ATU

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Re: Wx to broadcast address
« Reply #2 on: January 23, 2020, 07:32:45 PM »
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franji1

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Re: Wx to broadcast address
« Reply #3 on: January 23, 2020, 07:35:06 PM »
No.  As RBPLC mentioned, PEELINK is a good way to share data across multiple PLCs.  You can actually have an unlimited number of PEERLINK "subscribing" PLCs, and up to 16 "publishing" PLCs.

So, technically, you could have 1 PLC broadcasting 256 WORDs of data every 100ms to hundreds of PLCs "listening" to that "broadcast".
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AustinT

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Re: Wx to broadcast address
« Reply #4 on: January 23, 2020, 07:35:53 PM »
Hi , no I tried that initially but I need to do conditions on setting up the peer link . Case 1- peer link with a configuration case b , a peer link with a different setup .  Since I can only have one peerlink it will not work .
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AustinT

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Re: Wx to broadcast address
« Reply #5 on: January 23, 2020, 07:38:24 PM »
Are there any bits to change the configuration of peerlink during runtime ?
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RBPLC

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Re: Wx to broadcast address
« Reply #6 on: January 24, 2020, 05:54:41 AM »
What is meant by configurations? Could you set up logic in the Main program to change which values are written to PL memory for your different configurations?
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BobO

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Re: Wx to broadcast address
« Reply #7 on: January 24, 2020, 07:34:42 AM »
You can broadcast from a UDP device. It?s not hard to roll your own protocol with PACKETOUT and PACKETIN.
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"It has recently come to our attention that users spend 95% of their time using 5% of the available features. That might be relevant." -BobO

AustinT

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Re: Wx to broadcast address
« Reply #8 on: January 24, 2020, 08:33:19 AM »
Quote from: RBPLC on January 24, 2020, 05:54:41 AM
What is meant by configurations? Could you set up logic in the Main program to change which values are written to PL memory for your different configurations?
I have 3 brx plc?s that I want to have the exact same program . The only thing that can be different is the IP address .  The lead plc will not always be the same one . Right now it is working by using wx and writing to all three ip addresses , one at a time. One of the wx instructions is blocked however in each plc because it compares the three ip addresses and blocks sending it to itself .  It?s working fine so I?ll probably leave it alone . I just wanted to see if there is a cleaner way to do it .
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AustinT

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Re: Wx to broadcast address
« Reply #9 on: January 24, 2020, 08:35:34 AM »
Quote from: BobO on January 24, 2020, 07:34:42 AM
You can broadcast from a UDP device. It?s not hard to roll your own protocol with PACKETOUT and PACKETIN.
Thanks , I?ll see if these instructions will help clean up my code
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