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S5 comms to CP341

Created by: Spanner at: 5/3/2007 3:17 PM (1 Replies)

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5/3/2007 3:17 PM	Rate (0)
Spanner Posts: 1 Rating: (0)	Hi I am looking at upgrading a 95U to an S7. There is a HMI connected to the programming port which is reading from one DB, it is not possible to change this HMI. My thought was to use a CP341 20mA TTY card to use the 3964(R) protocol. What would the connections be from the 15 way D - type connected to the S5, to convert it to the 9 way on the S7 comms card CP341. I think there maybe an external power supply needfor a number ofpins.
Spanner Posts: 1 Rating: (0)	Last edited by: Spanner at: 03.05.2007 18:40 Last edited by: Spanner at: 03.05.2007 16:49
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5/5/2007 5:38 PM	Rate (0)
Late Platinum Expert Joined: 1/7/2006 Last visit: 12/23/2024 Posts: 2705 Rating: (320)	Hi, For TTY you need 4 wires, see the handbook CP 341 Point-to-Point Communication Installation and Parameter Assignmenton pageB-9. You can check this with the 95U handbook so that the 4 wires are coming on the same pinconnections. So the pins 1, 5, 8 and 9 have to be connected always. Which communication is active in the sending and/or the receiving is depending how the 95U is now connected, you can feed the power for the sending and the receiving current from the pins 2, 3 and 4 depending on how it is now connected. B.2 20 mA TTY Interface of the CP 341-20mA TTY Pin Allocation The table below shows the pin allocation for the 9-pin sub D female connector in the front panel of the CP 341-20mA TTY. Table B-2 Pin Allocation for the 9-Pin Sub D Female Connector of the Integrated Interface of the CP 341-20mA TTY 1.4.2 20 mA TTY Interface of the CP 341-20mA TTY Definition The 20 mA TTY interface is a current-loop interface for serial data transmission. Attributes The 20 mA TTY interface has the following attributes and is in compliance with the following requirements: Type: current-loop interface Front connector: 9-pin sub D female with screw fixing 20 mA TTY signals: Two isolated 20 mA current sources, receive loop (RX) "-" and "+" transmit loop (TX) "-" and "+"; all isolated against the S7-internal power supply (S7-300 backplane bus) and the external 24 V DC supply Max. transmission rate: 19.2 kbaud Max. cable length: 1000 m active at 9.6 kbaud* (CP supplies the current loop),1000 m slave at 9.6 kbaud* (partner supplies the current loop), 500 m active, 500 m passive at 19.2 kbaud; cable type LIYCY 7 0.14 (6ES7 902-2Ax00-0AA0) But I assume that will be not the bigest problem, how could you make the right software or is it a small display with some pictures? If it is a lot of work, then please get a new display, that would be cheaper and you didn't need a CP 341 and all the software to make for sending and receiving the right data.
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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