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Sat Feb 26 01:01:40 2022, Tega, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels
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Sat Feb 26 15:45:14 2022, Tega, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels
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Mon Feb 28 19:15:10 2022, Tega, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels
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Tue Mar 1 20:38:49 2022, Tega, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels   
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Wed Mar 2 11:50:39 2022, Tega, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels    
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Wed Mar 2 12:40:08 2022, Tega, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels 6x
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Sun Mar 6 18:14:45 2022, Tega, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels
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Mon Mar 7 13:53:40 2022, Tega, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels
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Mon Mar 7 14:52:34 2022, Koji, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels
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Tue Mar 8 12:08:47 2022, Tega, Update, VAC, Ongoing work to get the FRG gauges readouts to EPICs channels
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Message ID: 16704
Entry time: Sun Mar 6 18:14:45 2022
In reply to: 16693
Reply to this: 16706
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Author: |
Tega |
Type: |
Update |
Category: |
VAC |
Subject: |
Ongoing work to get the FRG gauges readouts to EPICs channels |
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Following repeated failure to establish communication between c1vac and the XGS600 controller via Perle IOLAN serial device server, I decided to monitor the signal voltage of the communication channels (pin#2, pin#3 and pin#5) using an oscilloscope. The result of this investigation is presented in the attached pdf document. In summary, it seems I have used a crossed wired RS232 serial cable instead of a normal RS232 serial cable, so the c1vac read request command is being relayed on the wrong comm channel (pin#2 instead of pin#3). I will swap out the cable to see if this resolves the problem. |
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