Thijs M created PLC4X-333:
-----------------------------
Summary: Multiple Items in ADS Read
Key: PLC4X-333
URL: https://issues.apache.org/jira/browse/PLC4X-333
Project: Apache PLC4X
Issue Type: Bug
Components: Driver-ADS
Affects Versions: 0.10.0
Reporter: Thijs M
Hi,
For a POC I'am testing PLC4X with ADS/AMS PLC. the PLC is a CX with twincat
V2.11.0 (Build 2216) on it.
So I made this test program with PLC4j (0.10.0_SNAPSHOT) to read 1 variable
(BOOL). This seems to work fine. When I add a second variable (also BOOL) to
the same request, I get an exception :
Caused by: java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for
length 0
at com.github.jinahya.bit.io.ArrayByteInput.read(ArrayByteInput.java:106)
at com.github.jinahya.bit.io.DefaultBitInput.read(DefaultBitInput.java:57)
at
com.github.jinahya.bit.io.AbstractBitInput.unsigned8(AbstractBitInput.java:63)
at
com.github.jinahya.bit.io.AbstractBitInput.unsigned16(AbstractBitInput.java:92)
at
com.github.jinahya.bit.io.AbstractBitInput.readInt(AbstractBitInput.java:135)
at
com.github.jinahya.bit.io.AbstractBitInput.readInt(AbstractBitInput.java:118)
at
com.github.jinahya.bit.io.AbstractBitInput.readLong(AbstractBitInput.java:156)
at
org.apache.plc4x.java.spi.generation.ReadBufferByteBased.readUnsignedLong(ReadBufferByteBased.java:190)
at
org.apache.plc4x.java.spi.generation.ReadBuffer.readUnsignedLong(ReadBuffer.java:74)
at
org.apache.plc4x.java.ads.protocol.AdsProtocolLogic.lambda$resolveMultipleSymbolicAddresses$65(AdsProtocolLogic.java:975)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
at
org.apache.plc4x.java.ads.protocol.AdsProtocolLogic.lambda$resolveMultipleSymbolicAddresses$67(AdsProtocolLogic.java:972)
at
org.apache.plc4x.java.spi.Plc4xNettyWrapper.decode(Plc4xNettyWrapper.java:175)
at
io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
Here is my code:
String clientIp = "192.168.0.192";
String sourceAmsNetId = "172.16.13.147.1.1";
int sourceAmsPort = 65534;
String targetAmsNetId = "192.168.0.184.1.1";
int targetAmsPort = 801;
String connectionString =
String.format("ads:tcp://%s?sourceAmsNetId=%s&sourceAmsPort=%d&targetAmsNetId=%s&targetAmsPort=%d",
plcIp, sourceAmsNetId, sourceAmsPort, targetAmsNetId, targetAmsPort);
try (PlcConnection plcConnection = new
PlcDriverManager().getConnection(connectionString)){
if (!plcConnection.getMetadata().canSubscribe()) {
logger.error("This connection doesn't support subscribing.");
return;
}
// Send Read Request
CompletableFuture<? extends PlcReadResponse> requestFuture =
plcConnection.readRequestBuilder()
.addItem("value-1", ".OPC_bAuto_:BOOL")
.addItem("value-2", ".OPC_bAuto_2:BOOL")
.build()
.execute();
PlcReadResponse response = requestFuture.get();
Any help would greatly be appreciated. Thank you !
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