Hi,

1. Install NTP server
"sudo apt-get install ntp"
2. Configure NTP server
"sudo nano /etc/ntp.conf"
Important part need to be modified in the file.
"
pool 0.debian.pool.ntp.org iburst #Standard time server from Internet
pool 1.debian.pool.ntp.org iburst
pool 2.debian.pool.ntp.org iburst
pool ...

Hello,

I have successfully set RevPi core3 as NTP server and my PC can get the time from RevPi. However my S7-1500 can't synchronize the time with RevPi. What's wrong with my configuration?

Hi Nicolai,

Below is the code of ntp.conf in my RevPi A (NTP server)
_________________________________________________________________________________________________________________
GNU nano 2.7.4 File: /etc/ntp.conf Modified

#pool 2.debian.pool.ntp.org iburst
#pool 3.debian.pool.ntp.org iburst ...

Hi Nicolai,

In RevPi B I install ntpdate and ntp.
In the startup program I make the following code:
“
#! /bin/sh
Sleep 40s
Killall ntpd
ntpdate -u 202.199.131.1
ntpd -c /etc/ntp.conf
“
202.199.131.1 is my time server of factory(RevPi A). RevPi B can get time from it however it can’t ...

Hello friends,

I use RevPi Core A as NTP client to get the standard time from Internet while RevPi Core A s also set as NTP server to provide the time for my factory. (This is step is successful)
In my workshop 1 I want to use RevPi Core B as local time server and it synchronizes time with RevPi ...

Hi Johannes,

Thank you!
Your method works, but the return type is string in Node-red. Additionally I use function node(msg.payload = Number(msg.payload); return msg;) to convert the string value into number value, then the value can be calculated later.

Hello friend,

I want to read out the input words of virtual ModbusRTU Master module in Node Red. However I have no good solution. Do you have some idea? Thank you!

Hi Dirk,

Sorry for my late reply! On some day of the second last week, the reestablish network connection problem didn't exist while I hadn't done anything to RevPi Core3. I want to simulate the error again for a long time, but not realized.
Maybe the issue can be closed. Thank you!

Hi Dirk,

I have read that link. Then I try removing the node--"node-red-contrib-revpi-nodes" and the problem is gone.

Hi Dirk,

Sure the command is entered on RevPi!
After the error is reproduced, I call ethtool and the result is "Link deteted: yes", "Auto-negotiation: on".