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Maximum number of Connection

2/19/2013 10:45 AM	Rate (0)
s_vb Bronze Member Joined: 10/24/2011 Last visit: 3/9/2023 Posts: 257 Rating: (1)	Hello Everyone, I am using CPU 315-2PN/DP. I have doubt about how many number of HMI's can I connect to this CPU on ethernet or on DP network. If there is any limitation then what might be the reason. Because in profibus network we can connect upto 126 slave devices. Please clarify me this. Thanks, Shailesh

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Joined: 2/6/2009

Last visit: 1/7/2025

Posts: 939

Rating:

(118)

Hi,

Here is the list of communications possible with CPU 315-2PN/DP. As per the below list you can connect 15 numbers of HMI's.

Number of connections
overall	16
usable for PG communication	15
reserved for PG communication	1
Adjustable for PG communication, min.	1
Adjustable for PG communication, max.	15
usable for OP communication	15
reserved for OP communication	1
adjustable for OP communication, min.	1
adjustable for OP communication, max.	15
usable for S7 basic communication	14
Reserved for S7 basic communication	0
adjustable for S7 basic communication, min.	0
adjustable for S7 basic communication, max.	14
usable for S7 communication	14
reserved for S7 communication	0
Adjustable for S7 communication, min.	0
Adjustable for S7 communication, max.	14
Max. total number of instances	32
usable for routing	X1 as MPI: max. 10; X1 as DP master: max. 24; X1 as DP slave (active): max. 14; X2 as PROFINET: 24 max

Check the complete specification of any CPU for its details. Here is thelinkfor CPU 315 2PN/DP.

_______________________________________________________________
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T.Saravana Kumar

"All for the Best"

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2/19/2013 11:51 AM	Rate (0)
umencho Diamond Expert Joined: 3/21/2006 Last visit: 3/17/2025 Posts: 10239 Rating: (1183)	What does it mean "Adjustable" -http://support.automation.siemens.com/WW/view/en/23369901 Just in case! Best regards, Hristo Mihalev

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2/19/2013 12:56 PM	Rate (0)
manmeet Gold Member Joined: 1/3/2006 Last visit: 2/19/2024 Posts: 726 Rating: (71)	Hi If more then 15 connections are required then use CP. More detailshere! Also sum of PG,OP and S7 connections shall not be larger then maximum number of connections. So if PG communication is set to 1 and S7 connections 2 then max OP connectios would be 13 in case of 315-2DP
	Last edited by: manmeet at: 2/19/2013 1:19 PM Last edited by: manmeet at: 2/19/2013 1:19 PM
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