I have been a long time that I would like to post this post.
PLC-Link is a Delta protocol to share easily memory area between 2 PLC’s.
Basically, the big advantage of PLC-Link is to work with Delta PLC’s as Remote I/O units.
Furthermore, you can use Delta PLC as Remote I/O or any other Delta device (Servodrive, Inverter, etc..) because the protocol used to share the info is Modbus.
Today we’ll focus on how to communicate one PLC master with 2 PLC slaves.
Hardware:
The communication will be Modbus RS485, so the wiring is so simple, two twisted pairs from connector to connector.
Protocol:
We decide to use 9600, 7, E, 1, ASCII, but you can use higher baudrate. In fact the new S2 PLC series (SS2, SX2, SA2, ES2 and EX2) can reach 921Kbps!!
Memory Mapping:
The plan is to share 6 registers from the slave 1 and put it inside the memory of the master.
And on the other way around too, put 6 registers of the master on the memory of the Slave one.
See below table
As you could see on the Slave software we transform the first three shared words to Slave Inputs and Outputs.
This is the proper way to read remotely the I/O of the slave into the master.
Programs:
Program Master
Program Slave 1
Program Slave 2
Alternate mirror all together
name: den-eindhoven
Password: BuPd2175
Remember to enable PLC-link on network 5 to start to share.
And if some trouble occurs just try to reset the communication with the RESET_Com Symbol.
Enjoy
May 29, 2021 at 7:41 am
FTP links don’t work!
April 1, 2021 at 1:25 pm
Access violation at address 00427DD5 in module WPLSoft.exe. Read of address 0313FFc8..,
how to solve this error..,
any one pls help
August 3, 2020 at 9:42 pm
That’s so easy to communicate with two DVP series. But I coundn’t use to communicate DVP SS2 with AS 300. Any help?
June 29, 2019 at 7:31 pm
Hey sir
I have. 2 plc one is delta dvp20ex2 and second is delta dvp12se can i connect them?? Plz help me how can i connect send me some tricks or programs.
April 4, 2020 at 9:20 am
Hi Delta. I used modbus RTU MODRW instructions communication 3 devices.I used code 03H read data from 3 devices to PLC(SS2).But it’s only store 1 data of address 1 in d1296. Ex:MODRW k1 k3 2000H D0 k1. MODRW k2 k3 1000H D10 k1. MODRW k3 k3 3000H D20 k1. Can MODRW instructions read data from 2000H and store in D0,1000H and store in D10,3000H and store in D20.I am facing with read multiple devices and store data in Plc.Please explain and support me.it is better give in an example code. Many thanks.
On Wed, Jul 3, 2019, 02:39 Delta Industrial Automation wrote:
> Dhruv patel commented: “Hey sir I have. 2 plc one is delta dvp20ex2 and > second is delta dvp12se can i connect them?? Plz help me how can i connect > send me some tricks or programs.” >
May 3, 2018 at 8:57 pm
Is it possible to communicate 1 plc (SX2) master with 1 plc (SX2) slave via PLC-Link and also connect a DOP-B HMI on that same network?
October 24, 2017 at 10:31 am
Can we use master plc bit reference directly in HMI connected to Slave PLC.
April 2, 2017 at 7:47 am
Hi sir.
I download sample program and I used sa2 plc communication with vfd-l and I can read parameters from vfd to plc I can not write parameters from plc to vfd.i do not why.can you help me?
December 19, 2015 at 9:01 am
Dear’s,
We have consider as DVP-28sv PLC and Slaves as DVP-28sv and DVP-10sx…,
Is it possible to Operate for MASTER/SLAVE…??
July 25, 2015 at 8:07 pm
Dear Sir;
i have only one dvp delta plc EH series; i would like to link this plc with intouch wonderware using com2 RS485. could you support me by PDF file.
regards
July 3, 2015 at 7:40 am
Hello sir,
can i connect PLC and VFDs on a same network using PLC link.?
if yes, then how?
thank you
April 12, 2015 at 3:54 pm
I have 2 plcs using PLC Link 96008E1 and ASCII.. But when I change the protocol to RTU modifying only M1143 on both sides, the communications stops. Any idea?
April 4, 2015 at 2:07 pm
i want communicate 40 es2 as slave and 60es2 as master to read and write input and output of each other please help???
March 24, 2015 at 9:02 pm
Dear Sir,
let me know can i use DVP14SS2 as a master and also DVP14SS2 salve.
February 11, 2015 at 9:36 am
i want to connect two motor with c2000 vfd and have to speed synchronize it,
how to do it
any one can help me
October 27, 2014 at 5:53 pm
Hello
right now i have a project of almost 300 inputs and 200 output having machine.
i am using SV2 series plc. till today i was using RS instruction to fetch and transmit data from 2 remote locations. From the last 10 days i was programming for remote addresses and amazingly my program length is 21900 line, and maximum program length may be 30000. so i was amazed that how could i complete this task when i am out of space?.
after reading this article i thing project will become successful.
thanks
October 15, 2014 at 3:37 am
hi all
need help on link up 2 unit dvp es2-40 with easy link.
if can please post a same sample for master and slave.
i have try the sample in the help file. can’t send and get date from slave.
thanks
lee
May 27, 2014 at 2:29 pm
hello
i have designed a machine panel.
i have used ss2 series PLC and 6 VFDs are connected with SS2 PLC through MODBUS. i have also connected HMI with PLC through com1(RS232).
my panel is working fine but some time it shows communication error connecting to PLC and after a while error removes.
please help ,, why this error is appearing on HMI.
kashif
May 29, 2014 at 9:59 pm
try other comunication rates
March 27, 2014 at 11:30 am
pls give me wiring diagram to connect dvp16 es2 to dvp 20 ex
March 5, 2014 at 5:45 pm
Dear sir,
i am using dvp-12se as master and dvp60-es2 as slave 1 and another dvp60-es2 as slave 2,I can easily read the map registors except x10-x17 of Dvp-60es2.
Please help
November 15, 2013 at 12:09 pm
sir,
30 slave working in RS485 now, any possible control with master plc, any manual or program?
thanx,
January 11, 2017 at 5:23 pm
Kindly tell me, how we can slave ID of Delta SS2 plc?
Thanks!
January 11, 2017 at 5:24 pm
Kindly tell me, how we can change slave ID of Delta SS2 plc?
October 24, 2013 at 8:44 am
Dear All,
I am working on PLC link, It is working fine but communication does not starts if I re-power the PLCs (Power On after power off)
What may be the reason?
October 24, 2013 at 5:19 pm
please use only 12SA2 or 28SV2
October 8, 2013 at 6:13 pm
Yes it is possible but station address should be diff and driver should be same
October 2, 2013 at 5:06 am
Dear all,
is it possible to connect one 12SE PLC with one Textpanel and one master plc?
waiing for reply. urgent plz.
Thanks
September 14, 2013 at 8:20 am
how should we read the d500 register from slave plc to master plc from modbus address means i have read D500 reg value from slave to master plc
August 28, 2013 at 5:42 pm
I am having truoble in PLC link’s communication between plc-sx2 and plc-sa2 when M1353=ON and plc-sx2 is the master, although there are not problem when plc-sa2 is master.
Thank you.
August 25, 2013 at 2:09 pm
How many registers can read by PLC link?
June 8, 2013 at 12:57 pm
i am having trouble in enabling PLC link, need advice.
Thank you
January 8, 2013 at 7:08 pm
I would like to know if the PLC-SX2 can run with M353=ON (access available for up to 50 wods).
Thank you.
October 17, 2012 at 2:18 pm
When I try to open the Master program an advice appears: “Unknown File Format”. I have ISPSoft V1.01, is this the reason?
I’m really interested on programing this PLC Link with 16 slaves, but there are some parts of the program that I don’t understand… can anybody please help me? Thank you!
October 17, 2012 at 3:57 pm
Install last version (available on delta website)
September 1, 2012 at 9:37 am
how did you get the hex address of register d500
September 5, 2012 at 3:33 pm
Device Range Type DVP address(Hex) Modbus address(Dec)
D 000~256 word 1000~10FF 404097~404352
D 256~511 word 1100~11FF 404353~404608
D 512~767 word 1200~12FF 404609~404864
D 768~1023 word 1300~13FF 404865~405120
D 1024~1279 word 1400~14FF 405121~405376
October 24, 2011 at 8:47 pm
done,
with M1004 and D1137, it´s solved.
All 6 working.
October 21, 2011 at 8:40 pm
i´m connecting 6 slaves and 1 master.
with the example i can pnly comunicate with 3 slaves.
what can be happening ???
October 24, 2011 at 8:07 am
PLC-Link is able to communicate with 16 slaves with only one master.
You must be able to do it !
Just use the example as a guidance, and the manual to find out the proper registers for the other 3 slaves.
good luck
October 29, 2014 at 5:16 am
hi
can i use ONE DVP28SV11R2 AS MASTER AND TWO DVP14SS211R AS SALVES?
August 29, 2011 at 12:06 pm
hey guys
how to open the link for Master Program
August 29, 2011 at 1:44 pm
The master program have ISP extension, and Windows used to block that kind of extensions…
Use another browser, or download the “alternate mirror all together” is exactly the same.
July 21, 2011 at 8:12 pm
the link to the programs does not work for the plc link application
July 22, 2011 at 10:24 am
Hi Clive
In my computer works!
In any case I enable an alternative link with all the programs together