Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

CP343-1 lean Limitation for Modbus TCP server communication

Created by: Saggy at: 4/4/2013 10:36 AM (7 Replies)

Rating (1)

Thanks 4

8 Entries

4/4/2013 10:36 AM	Rate (0)
Saggy Silver Member Joined: 11/8/2011 Last visit: 12/5/2024 Posts: 387 Rating: (43)	Dear Experts, We have CP343-1 Lean need to communicate with 23 number of MOdbus TCP servers whether CP343-1 LEan can handle this number of communications Thanks in advance

Suggestion To thank Quote Answer

4/4/2013 12:59 PM	Rate (0)
Fafner Silver Member Joined: 3/20/2013 Last visit: 4/3/2024 Posts: 676 Rating: (44)	The limit are 12 connections, that means if you insist on getting connect to your number of servers you need to 'multiplex'. Connect to a server --> send/receive data --> disconnect --> connect to next server --> ... here the technical data of the cp343-1 lean: http://support.automation.siemens.com/WW/view/en/23523142/td
	Best Regards, Fafner
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users Saggy

4/4/2013 1:14 PM	Rate (0)
Saggy Silver Member Joined: 11/8/2011 Last visit: 12/5/2024 Posts: 387 Rating: (43)	Fafner The limit are 12 connections, that means if you insist on getting connect to your number of servers you need to 'multiplex'. Connect to a server --> send/receive data --> disconnect --> connect to next server --> ... here the technical data of the cp343-1 lean: http://support.automation.siemens.com/WW/view/en/23523142/td Hi Fafner thanks for the reply do you have any Example or sample project for the multiplex Connect to server--->send/receive data---->disconnect----->connect to next server---->.... Thanks in advance

Suggestion To thank Quote Answer

4/4/2013 5:14 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (323)	Hello Saggy, CP343-1 LEAN supports only8 connections for open communication. There are two solutions for your configuration: - use two CP343-1EX31 and Modbus library 2XV9 450-1MB00 - use a PN-CPU and Modbus library 2XV9 450-1MB02. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (323)	Last edited by: Kaulquappe at: 4/4/2013 5:15 PM
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users 30A

4/8/2013 12:16 PM	Rate (0)
Saggy Silver Member Joined: 11/8/2011 Last visit: 12/5/2024 Posts: 387 Rating: (43)	Kaulquappe Hello Saggy, CP343-1 LEAN supports only8 connections for open communication. There are two solutions for your configuration: - use two CP343-1EX31 and Modbus library 2XV9 450-1MB00 - use a PN-CPU and Modbus library 2XV9 450-1MB02. Regards, Kaulquappe Hi Kaulquappe, thanks for the reply, By using PN-CPU and Modbus library 2XV9-450-1MB00 how many maximum connection i can go for?? Thanks in advance
	Last edited by: Saggy at: 4/8/2013 12:17 PM
Suggestion To thank Quote Answer

4/8/2013 12:50 PM	Rate (1)
Kaulquappe Posts: 3093 Rating: (323)	Hello Saggy, with a PN CPU you need 2XV9 450 1MB02. The PN CPU supports 8 connections as well, but the Modbus blocks support an easy way to disconnect connections and use them afterwards for another Modbus device. So the number of connected servers is theoretically unlimited. The devices are addressed sequentially. It depends on the needed data actualisation time how many servers make sense to be connected. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (323)
Suggestion To thank Quote Answer
This contribution was helpful to 2 thankful Users 30A Saggy

12/10/2014 4:39 PM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4766 Rating: (122)	New question published by30A is split to a separate thread with the subject Modbus TCP, where can I find these libraries?. Best regards Min_Moderator

Suggestion To thank Quote Answer

2/9/2015 6:36 AM	Rate (0)
killlereye Posts: 1 Rating: (0)	There are two solutions for your configuration: - use two CP343-1EX31 and Modbus library 2XV9 450-1MB00 - use a PN-CPU and Modbus library 2XV9 450-1MB02. _____________ GuL
killlereye Posts: 1 Rating: (0)
Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Related topics by keywords:

ModbusTCP

Follow us on