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Connecting S7-200 to S5?

Created by: peva at: 9/24/2008 2:55 PM (9 Replies)

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9/24/2008 2:55 PM	Rate (0)
peva Posts: 38 Rating: (0)	Hello All, is there a possibility to connect CPU S5-115U to S7-200? Thanks in advance for any hints, Petr
peva Posts: 38 Rating: (0)
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9/24/2008 4:24 PM	Rate (0)
marcsinclair Posts: 49 Rating: (5)	Hi, Yes, I've done it, or very similar, I set up communication between S5-90u, S5-100 and S7-200. It does depend very much on how much data you want to exchange and what sort of update speed you want. With digital outputs, you can perhaps achieve 10 Baud with a 'bit wiggle' I would use the S7-200 as the clock, so using two outputs and one input, on the S5 use two inputs and one output. The beauty is, there is nothing to buy, no licences just a little time and some cable.
marcsinclair Posts: 49 Rating: (5)
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9/24/2008 4:32 PM	Rate (0)
JMJ Posts: 487 Rating: (45)	Easiest way is using profibus-DP. In 115U you need to use IM308C as DP master and EM277 in S7-200 as DP slave.
JMJ Posts: 487 Rating: (45)
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10/8/2008 9:39 PM	Rate (0)
darkbits Advanced Member Joined: 4/23/2008 Last visit: 4/25/2023 Posts: 31 Rating: (0)	Hi Experts! JMJ, I was walking around the site loking for info to know if the next configuration could work Profibus S5 (e.g. 115U) <---> IM308C <----------------------------> EM277 <---> S7200 (e.g 224) You said that this should work...have you tested this before??? Maybe you have some info that could help me in this..Please! any help is willkommen. ThaNKs.

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10/8/2008 9:48 PM	Rate (0)
darkbits Advanced Member Joined: 4/23/2008 Last visit: 4/25/2023 Posts: 31 Rating: (0)	Mhhhhh my previous schematic looks pretty ugly ....so here goes again, but now is clearer.. Profibus S5 <---> IM308C <----------------------------> EM277 <---> S7200

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10/9/2008 2:41 PM	Rate (0)
JMJ Posts: 487 Rating: (45)	I have used IM308C and EM277 separately, but nto together in one project. But I do not think there is any problem.
JMJ Posts: 487 Rating: (45)
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10/9/2008 3:55 PM	Rate (0)
darkbits Advanced Member Joined: 4/23/2008 Last visit: 4/25/2023 Posts: 31 Rating: (0)	The problem, that scares me, is that the IM308C is an old module that only works with DPV0 (at least that's what I know) and the EM277 is a new one, that (this is what I'm not totally sure) "probably" works with DPV1, so compatibility could not be secured. Is this right? or wrong?.....please tell me!

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10/9/2008 4:36 PM	Rate (0)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 11/10/2024 Posts: 12293 Rating: (2691)	Hello darkbits; You should have no qualms about using a DPV1 slave with a DPV0 master. The DPV1 extensions only apply to the acyclic portion of the communication exchanges; all cyclic exchanges are exactly the same on allversions of Profibus-DP. You will find detailed infrormation on all versions of Profibus-DP on the Profibus.com site, in the technology folders. All you need to do is insert the gsd file for the S7-200 EM277 in the Com Profibus file of the IM 308C master, configure the data size used for the exchanges in the S7-200 slave, select a V-memoryoffset for the S7-200 program location of the dProfibus-DP data exchanges, and finally loadthe modified configuration to the master. Hope this helps, Daniel Chartier

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10/9/2008 6:34 PM	Rate (0)
darkbits Advanced Member Joined: 4/23/2008 Last visit: 4/25/2023 Posts: 31 Rating: (0)	Thanks dchartier that reassures me... for now. Will see what happen in a couple of weeks when I have to go to make some test in terrain. Anyway just for knowing, you say there is no problem using a DPV0 as master and a DPV1 as slave, but what if the configuration is inverse? Works anyway? Just wondering...ThaNKs.

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10/9/2008 6:55 PM	Rate (1)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 11/10/2024 Posts: 12293 Rating: (2691)	Hello darkbits; The cyclic portion will work just fine, that is, the portion governed by the DPV0 definition. You will not be allowed to setup DPV1 exchanges with this slave anyway, its gsd file will tell the master itonly accepts DPV0 setups. For example, here is an extract of the last lines of the gsd file of a DPV1 slave (no matter the exact model, it is a standard construct): Module="Cyclic Read and Write" 0xB3 ; 4 byte input data + 4 byte output data 1 EndModule Module="Cyclic Read only" 0x93 ; 4 byte input data, no output data 2 EndModule ; ; ; DPV1: ; DPV1_Slave = 1 C1_Read_Write_supp = 1 C2_Read_Write_supp = 1 C1_Max_Data_Len = 240 C2_Max_Data_Len = 240 C1_Response_Timeout = 100 ; in units of 10ms, optional C2_Response_Timeout = 100 ; in units of 10ms, optional C1_Read_Write_required = 0 C2_Read_Write_required = 0 C2_Max_Count_Channels = 1 Max_Initiate_PDU_Length = 64 Diagnostic_Alarm_supp = 0 Process_Alarm_supp = 0 Pull_Plug_Alarm_supp = 0 Status_Alarm_supp = 0 Update_Alarm_supp = 0 Manufacturer_Specific_Alarm_supp = 0 If the gsd file does not state explicitely it is DPV1-enabled,the modulewill only act as a DPV0 slave. Regards, Daniel Chartier

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