Experimental Physics and
Industrial Control System

Hi all,

I use ca library to put PV value, there are about 300 PVs. Follow the instruction, I used descriptor to create and connect the PVs at once:

List<ChannelDescriptor<?>> descriptors = new ArrayList<> ();

 List<Channel<?>> channels;
for (Entry<String, String> ip_entry : ipMap.entrySet()) {
String ip = ip_entry.getValue();
for (Entry<Integer, String> port_entry : portMap.entrySet()) {
String port = port_entry.getValue();
String pv_name = "ACC_RCS_CO:" + port + ":" + ip + ":StartTime";
descriptors.add(new ChannelDescriptor<String>(pv_name, String.class));
pv_name = "ACC_RCS_CO:" + port + ":" + ip + ":NextWriteTime";
descriptors.add(new ChannelDescriptor<String>(pv_name, String.class));
pv_name = "ACC_RCS_CO:" + port + ":" + ip + ":AvgProcDelay";
descriptors.add(new ChannelDescriptor<String>(pv_name, String.class));
pv_name = "ACC_RCS_CO:" + port + ":" + ip + ":WritePeriod";
descriptors.add(new ChannelDescriptor<String>(pv_name, String.class));
pv_name = "ACC_RCS_CO:" + port + ":" + ip + ":WriteDuration";
descriptors.add(new ChannelDescriptor<String>(pv_name, String.class));
pv_name = "ACC_RCS_CO:" + port + ":" + ip + ":PVNum";
descriptors.add(new ChannelDescriptor<Integer>(pv_name, Integer.class));
pv_name = "ACC_RCS_CO:" + port + ":" + ip + ":Connected";
descriptors.add(new ChannelDescriptor<Integer>(pv_name, Integer.class));
pv_name = "ACC_RCS_CO:" + port + ":" + ip + ":Disconnect";
descriptors.add(new ChannelDescriptor<Integer>(pv_name, Integer.class));
pv_name = "ACC_RCS_CO:" + port + ":" + ip + ":WriteCount";
descriptors.add(new ChannelDescriptor<Integer>(pv_name, Integer.class));
}
}
channels = Channels.create(context,  descriptors);
My question is how to use each channel to put value? I've not found any example. I have tried: channels.get(0).put("test"), it's not correct.(error info:The method put(capture#1-of ?) in the type Channel<capture#1-of ?> is not applicable for the arguments (String))

Any advice or suggestions would be appreciated.

Replies:

Re: usage of Java Channel Access Client J. Lewis Muir via Tech-talk

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