SiePortal

The integrated platform for your product selection, buying and support workflow - bringing together Industry Mall and Online Support.

Products & Services
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Support Support
{{(apiData.Support | filter:{'rank':1}:true)[0].title}} Support
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
MySiePortal MySiePortal
{{(apiData.MySiePortal | filter:{'rank':1}:true)[0].title}} MySiePortal
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Cart ({{apiData.CartCount}})

Navigation

number of connections S7 1200 to PAC3200

11/11/2010 10:28 AM	Rate (0)
luciferC4 Silver Member Joined: 1/25/2006 Last visit: 11/27/2025 Posts: 257 Rating: (62)	Hi, can anyone tell me how many PAC3200 Sentrons are possible connect to S7 1200 PLC? is there limitation in number of connection. Communication is Modbus/TCP. Thanks.

Suggestion To thank Quote Answer

11/11/2010 12:45 PM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 10/16/2025 Posts: 10239 Rating: (1183)	Unique number of the connection (value range 1-255)  Each connection ID must only exist once. Up to eight parallel connection are possible at the same time. More details at Data Communication via Modbus/TCP with S7-1200 (CE-X22) BR, Hristo Mihalev

Suggestion To thank Quote Answer

11/11/2010 2:29 PM	Rate (0)
0_Einstein Grandmaster-Expert Joined: 7/7/2010 Last visit: 12/23/2025 Posts: 16325 Rating: (2520)	Perhaps I read wrong, but I thought the max tcp connections available on an S7-1200 is 4. If you are online with the PLC, that's 1. If you have an HMI, that's 2. That leaves you 2 for remote tcp connections. I would like it to be a higher number, so hope it's really 8.
	science guy
Suggestion To thank Quote Answer

11/15/2010 8:50 AM	Rate (0)
fritz Diamond Member Joined: 10/7/2005 Last visit: 12/19/2025 Posts: 3052 Rating: (1062)	huggy_d1 Perhaps I read wrong, but I thought the max tcp connections available on an S7-1200 is 4. I would like it to be a higher number, so hope it's really 8. The 1200should indeed be able to communicate with up to 8 PAC3200's at the same time as per technical spec of the 1200 manual and THIS FAQ (Modbus on TCP will use the T-Blocks related TCP connection even though the Example does not seem to explicitly state this).
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users 0_Einstein

11/15/2010 2:09 PM	Rate (0)
0_Einstein Grandmaster-Expert Joined: 7/7/2010 Last visit: 12/23/2025 Posts: 16325 Rating: (2520)	Thanks! I am very glad to know this.
	science guy
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users fritz

Share this page:

Share this page on...