thx On 3/6/19 1:51 PM, Tim Mitsch wrote:
Hello Gunther This bug is known and we fixed it already in development branch. The problem is not the amount of variables rather than one-byte variables like BOOL,BYTE,USINT, ... - Simens uses a filling-byte when acquiring a single one-byte request Right now we have the bugfix-release 0.3.1 as RC1 in vote, so you can try using a checkout development-branch from GitHub or just wait a few days until vote is finished and the version is available on MavenCentral. Or you can use the staging-repository by integrating that in your pom and change plc4x-version to 0.3.1: https://repository.apache.org/content/repositories/orgapacheplc4x-1008 Best Tim Am 06.03.19, 13:40 schrieb "Gunther Gruber" <[email protected]><mailto:[email protected]>: I try to read multiple variables synchronous from a S7-1500 and get a exception. I use the code from the hello world example. When i split up the variables into smaller units like 5-8 it works. any suggestion on this? Is there a limit to the number of variables? Gunther String vars = "%Q73:WORD,%Q75:WORD,%I73:WORD,%I75:WORD,%I74:WORD,%I77:WORD,%F81.1:BOOL,%Q82:REAL,%F86:INT,%F89:REAL,%I40:INT,%Q2.5:BOOL,%Q3:INT,%I66:WORD,%Q20:REAL,%I61:WORD,%Q25:WORD,%I58.0:BOOL,%F1:BYTE,%F1.0:BOOL,%F1.1:BOOL,%F1.2:BOOL,%F1.3:BOOL,%F28.0:BOOL,%I58:WORD,%F0.7:BOOL,%F0.6:BOOL,%F0.5:BOOL,%F0.4:BOOL,%F0.3:BOOL,%F0.2:BOOL,%F0.1:BOOL,%F0.0:BOOL,%F0:BYTE"; for (String item : splitVariables(vars)){ variables.add(item); } 460 [main] INFO com.ida.moira.collector.plc4j.PLCCollectorOperatorTest - Synchronous request ... 487 [nioEventLoopGroup-2-1] WARN io.netty.channel.DefaultChannelPipeline - An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception. io.netty.handler.codec.DecoderException: java.lang.NullPointerException at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98) at org.apache.plc4x.java.s7.netty.S7Protocol.channelRead(S7Protocol.java:410) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:284) at io.netty.handler.codec.ByteToMessageCodec.channelRead(ByteToMessageCodec.java:103) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.NullPointerException at org.apache.plc4x.java.s7.netty.S7Protocol.decodeVarPayload(S7Protocol.java:608) at org.apache.plc4x.java.s7.netty.S7Protocol.decodePayloads(S7Protocol.java:580) at org.apache.plc4x.java.s7.netty.S7Protocol.decode(S7Protocol.java:456) at org.apache.plc4x.java.s7.netty.S7Protocol$1.decode(S7Protocol.java:85) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88) ... 31 more -- Gunther Gruber Software Developer [cid:[email protected]] Intelligent Data Analytics GmbH & Co. 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