java - Illegal data address exception in j2mod -

-



hello using j2mod serial connection modbus device , exception com.ghgande.j2mod.modbus.modbusslaveexception: illegal data address there me . below code.

public static void main(string[] args) throws exception {     serialconnection con = null;     modbusserialtransaction trans = null;     readmultipleregistersrequest req = null;     readmultipleregistersresponse res = null;      string portname= "com4"; //the name of serial port used     int unitid = 1; //the unit identifier talking     int ref = 41799; //the reference, start reading     int count = 100; //the count of ir's read     int repeat = 1; //a loop repeating transaction     // modbuscoupler.createmodbuscoupler(null);     modbuscoupler.getreference().setunitid(1);      serialparameters params = new serialparameters();     params.setportname(portname);     params.setbaudrate(19200);     params.setdatabits(8);     params.setparity("none");     params.setstopbits(1);     params.setencoding(modbus.serial_encoding_rtu);     params.setecho(false);      //4. open connection     con = new serialconnection(params);     con.open();      //5. prepare request     req = new readmultipleregistersrequest(ref, count);     req.setunitid(unitid);     req.setheadless();      //6. prepare transaction     trans = new modbusserialtransaction(con);     trans.setrequest(req);      int k = 0;     {       trans.execute();       res = (readmultipleregistersresponse) trans.getresponse();       (int n = 0; n < res.getwordcount(); n++) {         system.out.println("word " + n + "=" + res.getregistervalue(n));       }       k++;     } while (k < repeat);      //8. close connection     con.close();   }

illegal data address modbus exception indicates trying access non-existent registers.

in code try access registers 41799-42798. device not have these registers.





wiki

Comments

Post a Comment

Popular posts from this blog

Asterisk AGI Python Script to Dialplan does not work -

-
i'm stuck project have check database of sip extension incoming caller id , dial sip extension. below receive when run script on asterisk cli. -- registered sip '9125' @ 192.168.1.102:50142 > saved useragent "zoiper rv2.8.40" peer 9125 [2017-08-22 13:53:33] notice[5095]: chan_sip.c:24558 handle_response_peerpoke: peer '9125' reachable. (17ms / 2000ms) == using sip rtp tos bits 184 == using sip rtp cos mark 5 -- executing [0112617769@from-trunk:1] answer("sip/obitrunk1-0000000d", "") in new stack > 0x1ca50d0 -- probation passed - setting rtp source address 192.168.1.98:16834 -- executing [0112617769@from-trunk:2] agi("sip/obitrunk1-0000000d", "test.py") in new stack -- launched agi script /var/lib/asterisk/agi-bin/test.py args: ['/var/lib/asterisk/agi-bin/test.py'] env line: agi_request: test.py env line: agi_channel: sip/obitrunk1-0000000d env line: agi_language: en env line: a
Read more

python - Read npy file directly from S3 StreamingBody -

-
i have many .npy (numpy) , .json files saved in s3, need download , load these files. for json files downloading files , loading dictionary using following code: obj = s3.object(bucket, key) response = obj.get() body = response['body'].read().decode('utf-8') data = json.loads(body) that way avoid writing .json file disk , reading it. now want same .npy files, equivalent? currently downloading file, saving temp file on disk , loading np.load avoid if possible. following https://stackoverflow.com/a/28196540/3509999 : obj = s3.object(bucket, key) io.bytesio(obj.get()["body"].read()) f: # rewind file f.seek(0) arr = np.load(f) wiki
Read more

kotlin - Out-projected type in generic interface prohibits the use of metod with generic parameter -

-
i start using kotlin , defined interface this: interface aadapter<vh : recyclerview.viewholder> { fun oncreateaviewholder(parent: viewgroup): vh fun onbindaviewholder(v: vh, position: int) } and when try use on code: class klasa ( private val adapter: aadapter<*> ) { fun dosth(){ //... val vh = this.adapter.oncreateaviewholder(parent) //on below line error adapter.onbindaviewholder(v, position) //... } } i error out-projected type 'aadapter<*>' prohibits use of 'public abstract fun onbindaviewholder(v: t, position: int): unit i tied add "in" or "out" definition i'm confused. how allow it. replace aadapter<*> aadapter<recyclerview.viewholder> . class klasa ( private val adapter: aadapter<recyclerview.viewholder> ) { // ... because have declared aadapter has type parameter vh type subclass of recyclerview.
Read more