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RS 232 error

1/15/2015 5:25 PM	Rate (0)
pavans Posts: 81 Rating: (0)	Hi, The problem is when in remove my RS 232 device the RCV_PTP tags are storing the last value that it received from RS 232 but they shoud be at zero. I used SIGN_GET function but it is not showing any change in its tags when I remove my RS 232 Please help me Thanks pavan
pavans Posts: 81 Rating: (0)
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1/16/2015 10:47 AM	Rate (0)
Arno81 Posts: 98 Rating: (9)	Hey, which CP exactly do you use? I´m thinking of an Parameter in PtP Param tool wher reset off rcv-buffer can be set up. CP PtP Param configuration you can download in the latest Verion here: ->http://support.automation.siemens.com/WW/view/en/27013524
Arno81 Posts: 98 Rating: (9)
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1/16/2015 3:55 PM	Rate (0)
pavans Posts: 81 Rating: (0)	Hi Arno, I am using S7 1200 1214 CPU AC/DC/RLY. Thanks, pavan
pavans Posts: 81 Rating: (0)
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1/17/2015 5:21 PM	Rate (0)
eisenpferdreiter Posts: 1058 Rating: (93)	pavans Hi, The problem is when in remove my RS 232 device the RCV_PTP tags are storing the last value that it received from RS 232 but they shoud be at zero. I used SIGN_GET function but it is not showing any change in its tags when I remove my RS 232 Please help me Thanks pavan Hello pavans, I would send a toggle bit via RS 232 line and check if on-state or off state of that bit is longer than half cycle time of toggle. If so, RS 232 communication is broken and you can zero the corresponding tags. regards
eisenpferdreiter Posts: 1058 Rating: (93)
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1/17/2015 9:39 PM	Rate (0)
pavans Posts: 81 Rating: (0)	Can you please explain me more clearly, I am new to programming, Please understand Thank you very much for oyur support pavan
pavans Posts: 81 Rating: (0)
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1/17/2015 10:45 PM	Rate (0)
eisenpferdreiter Posts: 1058 Rating: (93)	pavans Can you please explain me more clearly, I am new to programming, Please understand Thank you very much for oyur support pavan Can your RS 232 device send you a clock signal? regards
eisenpferdreiter Posts: 1058 Rating: (93)
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1/18/2015 12:30 AM	Rate (0)
pavans Posts: 81 Rating: (0)	I dont know, I actually what happens Every 100 ms I am sending an array of 3 bytes of data which is stored in a buffeer through send_ptp block and receive 10 bytes of data through rcv_ptp block in a buffer. The 3 bytes of data has the hex protocol given by my RS 232 manufacturer to communicate with the device and the 10 bytes is the protocol which ir response from it. I dont know about this clock, Please help me. Thanks, pavan
pavans Posts: 81 Rating: (0)
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