Re: Failed connection using e3-s7plc to Siemens S7-1500

[Miklós Boros via Tech-talk <tech-talk@aps.anl.gov>]

Dear Mateusz,

Usually the issue is in the PLC.

You can doublecheck it by telnet into the PLC IP on port 2000. 

for example: telnet 192.168.0.100 2000

You should get an active connection and if you send something you should see it too in a binary form.

If you can't telnet it means the PLC does not open the port 2000 properly.

Check if you use the proper HW_ID for T_CON. X1 is usually 64 and X2 is 72.

The send block also needs a constant trigger.

Tell me if you need an example.

Cheers,

Miklós Boros

---

Feladó: Tech-talk <tech-talk-bounces@aps.anl.gov>, Mateusz Nabywaniec via Tech-talk <tech-talk@aps.anl.gov> nevében
Elküldve: 2021. október 28., csütörtök 15:42
Címzett: tech-talk@aps.anl.gov; Dominik  Domagała; dirk.zimoch@psi.ch; timo.korhonen@ess.eu
Tárgy: Failed connection using e3-s7plc to Siemens S7-1500

Hello,

 

Together with @Dominik  Domagała we are trying to connect with Siemens S7-1500 using e3-s7plc module (https://gitlab.esss.lu.se/e3/wrappers/communication/e3-s7plc) created by ESS.

 

We have EPICS 7.0.5 installed on CentOS 7 VM as well as E3 modules.

Here is our start cmd based on : http://epics.web.psi.ch/software/s7plc/YHLhtcPLCa.pdf

 

‘’’

require s7plc

epicsEnvSet("TOP","$(E3_CMD_TOP)/..")

s7plcConfigure cpu1,192.168.0.1,2000,240,240,1,2000,500

dbLoadRecords ("$(TOP)/db/records.db")

iocInit

‘’’

 

Unfortunetely we have the error:

`s7plcConnect cpu1: background connect to 192.168.0.1:2000 failed: Connection refused.`

 

The firewall on VM and host side are disabled.

 

PLC Program configuration:

 

-Full Access.

-Enabled PUT/GET connections.

-Data blocks ale with full access , not optimized

-TCON in stand by with status BUSY

 

TCON configuration:

-Active Est. ON

-Unspecified partner with IP address (E3 address)

-TCP connection type by port 2000.

 

When we are starting E3 server we are getting information as below

10/28/21 08:44:00.763 s7plcConnect cpu1: background connect to 192.168.0.1:2000 failed: Connection refused

We can’t get why E3-s7plc does not work on our machine. Does anybody had similar issue or successfully connected using e3-s7plc with Siemens S7-1513-1?

 

Thanks in advance,

Mateusz Nabywaniec 

S2Innovation, Cracow, Poland