rene

was a real brain-cracker but i manage to solves it ...... <=closed =>

I tried: $host = "192.168.0.192"; $port = 502; // No Timeout set_time_limit(0); $socket = socket_create(AF_INET, SOCK_STREAM, 0) or die("Could not create socket\n"); socket_connect($socket, $host, $port) or die("Could not connect to server\n"); socket_write($socket, $senddata) or die("Could not send data to server\n"); $result = socket_recv($socket, $buf , 2000 , 0 ); echo "Reply From Server :".strlen($result)." / ".strlen($result)." / ".strlen($buf); socket_close($socket); print "\n\n<br />\ntest1<br />\n"; but i still don't get output .... 11 03 138c6 0027 ea1d Reply From Server :1 / 1 / 0 test1

when you google on modbus php you end up with only one from Jan Krakora which gives me a error about connection which google gives unfortunally not a solution. But i will study that link of reactphp tomorrow. It's indeed something with socket (is there a diffrence with websocket?) .......

the pymodbus.py library is somewhere in the os. I just want to write the php code from scratch. I assume the communicating is thru websocket protocol. How hard can it be? How many members this forum have? I hoped that there would be members that had already did something with modbus-tcp protocol or even better....have a solaredge converter at home. Would it be great for those to see there values realtime and being independent from the solaredge-servers? But i place some print "testx<br />\n"; and noticed the script wouldnt passed the write function. and write must be fwrite i think. I also now experimenting with $fp = stream_socket_client("tcp://192.168.0.192:502", $errno, $errstr, 3); but still no output...... which raise the question for me, is it tcp or udp. i thought modbus-tcp is a serial protocol encapsulated in a tcp protocol and it's just sending the codes and after that receiving the codes ..... Unfortunally modbus is not common for non-industry so not much good examples i.c.w. php. But again, it must be possible .......... right? ---------------------------------- btw: this is output from phpversion() ------- Additional Modules Module Name Environment -------- sockets Sockets Supportenabled sodium

documentation is sunspec for py-script you need pip install pyModbusTCP solaredgemodbus.py #!/usr/bin/env python # -*- coding: utf-8 -*- read_register read 10 registers and print result # on stdout you can use the tiny modbus server "mbserverd" to test this # code mbserverd is here: https://github.com/sourceperl/mbserverd the # command line modbus client mbtget can also be useful mbtget is here: # https://github.com/sourceperl/mbtget from pyModbusTCP.client import ModbusClient import time from datetime import datetime #import http.server #import socketserver #from flask import Flask #app = Flask(__name__) SERVER_HOST = "192.168.0.192" SERVER_PORT = 502 c = ModbusClient() # uncomment this line to see debug message# #c.debug(True) define modbus # server host, port c.host(SERVER_HOST) c.port(SERVER_PORT) #@app.route('/') #def index(): # return 'Hello world' #if __name__ == '__main__': # app.run(debug=True, host='0.0.0.0') # open or reconnect TCP to server if not c.is_open(): if not c.open(): print("unable to connect to "+SERVER_HOST+":"+str(SERVER_PORT)) # if open() is ok, read register (modbus function 0x03) if c.is_open(): # read 10 registers at address 0, store result in regs list regs = c.read_holding_registers(40070, 39) #regs = c.read_holding_registers(40097, 4) # if success display registers if regs: power = regs[13] # 40084 I_AC_Power powersf = regs[14] # 40085 I_AC_Power_SF if powersf>32768: powersf = (65536 - powersf) * -1 power = round(power*(10**powersf),3) lifetime = regs[24]+(65536*regs[23]) # 40094 I_AC_Energy_WH lifetimesf = regs[25] # 40096 I_AC_Energy_WH_SF if lifetimesf>32768: lifetimesf = (66536 - lifetimesf) * -1 lifetime = lifetime*(10**lifetimesf) status = regs[37] # 40108 I_Status #print("reg ad 0 to 9: "+str(regs)) print {"reg 40084= #"+str(regs[15])} print power print powersf print #(str(lifetime) + "wh") print lifetimesf codes = ["NA", "OFF", "SLEEP", "START", "ON", "PROD", "STOP", "FAULT", "SETUP"] #print (codes[status]) now = datetime.now() current_time = now.strftime("%H:%M:%S") #print (current_time + "\t" + str(power) + "wh\t\t" + str(lifetime) + "wh\t" + codes[status]) print ("current=" + str(power) + "&lifetime=" + str(lifetime) + "&status=" + codes[status]) #i = 0 #40108 I_Status 1=OFF, 2=SLEEP, 3=START, 4=ON, 5=PROD, 6=STOP, #7=FAULT, 8=SETUP print("----------------------") #while i < len(regs): #print (str(i+40071) + " : " + str(regs[i])) i += #1 #sleep 2s before next polling and with solaredgemodbus.php i run and output the python script <?php //print "Result of solaredgemodbus.py is:<br />\n"; //$read = escapeshellcmd("python solaredgemodbus.py"); $command = escapeshellcmd('python3 solaredgemodbus.py'); $read = shell_exec($command); if (substr($read, 0,7) == "current") { print $read; /*$ts = time(); $time = date('H:i:s',$ts); $date = date('d-m-Y',$ts); $fp=fopen("output.log","a"); if (fwrite($fp, $time."\t".$date."\t".$read)) { //print "writing data to output.log succes."; } else { //print "writing data to output.log failed."; } fclose ($fp);*/ } else { // make log $ts = time(); $time = date('H:i:s',$ts); $date = date('d-m-Y',$ts); $fp=fopen("output.log","a"); if (fwrite($fp, $time."\t".$date."\t".$read."\n")) { //print "writing data to output.log succes."; } else { //print "writing data to output.log failed."; } fclose ($fp); } ?> and that's the reason i want to eliminate the python-script..... it's too much hassle. for the sunspec specifications just google on sunspec solaredge modbus.

Hello, i'm a little stuck. I try to connect with my Solaredge inverter which i enabled modbus over tcp (port 502). It's works with a python script si it's not the Solaredge. The problem is i don't get any out put. The appearance of a few // is because of testing. Also what is confusing that sunspec mentioned about two methods of offset (0 or 40001) which i find confusing. <?php $id = 1; //1 $fc = 3; $offset = 0; //70, ...107 $length = 122; //39, ..3 //Appendix A – Supported MODBUS Request Methods //SolarEdge has implemented two methods of the MODBUS request procedure: //MODBUS request without explicit addressing – supported by communication board CPU version 2.478 and above. For example: //$offset_h = floor($offset/256); //$offset_l = $offset-$offset_h*256; //MODBUS request with explicit register addressing - supported by all communication board CPU versions. For example: $offset_h = floor(($offset+40000)/256); $offset_l = ($offset+40000)-$offset_h*256; $length_h = floor($length/256); $length_l = $length-$length_h*256; //$crc = crc16(chr(0).chr($id).chr(0).chr($fc).chr($offset_h).chr($offset_l).chr($length_h).chr($length_l)); $crc = crc16(chr($id).chr($fc).chr($offset_h).chr($offset_l).chr($length_h).chr($length_l)); $crc_h = floor($crc/256); $crc_l = $crc-$crc_h*256; if ($id<10) {$id0 = "0";} else {$id0 = "";} if ($fc<10) {$fc0 = "0";} else {$fc0 = "";} if ($offset_h<10) {$offset_h0 = "0";} else {$offset_h0 = "";} if ($offset_l<10) {$offset_l0 = "0";} else {$offset_l0 = "";} if ($length_h<10) {$length_h0 = "0";} else {$length_h0 = "";} if ($length_l<10) {$length_l0 = "0";} else {$length_l0 = "";} if ($crc_h<10) {$crc_h0 = "0";} else {$crc_h0 = "";} if ($crc_l<10) {$crc_l0 = "0";} else {$crc_l0 = "";} //$senddata = chr(0).chr($id).chr(0).chr($fc).chr($offset_h).chr($offset_l).chr($length_h).chr($length_l).chr($crc_l).chr($crc_h); $senddata = chr($id).chr($fc).chr($offset_h).chr($offset_l).chr($length_h).chr($length_l).chr($crc_l).chr($crc_h); //without crc ... //$senddata = chr($id).chr($fc).chr($offset_h).chr($offset_l).chr($length_h).chr($length_l); $senddata2 = $id0.dechex($id)." ".$fc0.dechex($fc)." ".$offset_h0.dechex($offset_h).$offset_l0.dechex($offset_l)." ".$length_h0.dechex($length_h).$length_l0.dechex($length_l)." ".$crc_l0.dechex($crc_l).$crc_h0.dechex($crc_h); //$senddata = "11 03 006B 0003 7687"; //$senddata = "1103006B00037687"; //print $senddata."<br />\n"; print $senddata2."<br />\n"; //print dechex($id)." ".dechex($fc)." ".dechex($offset_h).dechex($offset_l)." ".dechex($length_h).dechex($length_l)." "; //print dechex($crc_l).dechex($crc_h); //set_time_limit(0); $fp = fsockopen("192.168.0.192", 502, $errno, $errstr, 3); if(!$fp) { print "can\'t connect modbus tcp device<br />\n"; die(); } else{ print "Connected to modbus<br />\n"; //11 03 0046 0027 xxxx //request 40070 +27 xxxx is crc check //stream_set_timeout($socketHandler, 2); write($fp, $senddata); //write($fp, $senddata,strlen($senddata)); //set_socket_blocking($fp,true); //fputs($fp, $senddata); $response = ''; while (!feof($fp)) { //echo fgets($fp, 128); //stream_set_timeout($socketHandler, 2); //$line[] = fgets($fp, 128); $line[] = fgets($fp); //echo fgets($fp); //echo fread($fp,255); //$response = stream_get_contents($fp); //$line[] = fread($fp); //$response .= fgets($fp, 128); // If you expect an answer } print $response; foreach ($line as $key => $value) { print $key+$offset.":".intval($value)."<br />\n"; } } fclose($fp); function crc16($data) { $crc16 = 0xFFFF; for ($i = 0; $i < strlen($data); $i++) { $crc16 ^=ord($data[$i]); for ($j = 8; $j !=0; $j--) { if (($crc16 & 0x0001) !=0) { $crc16 >>= 1; $crc16 ^= 0xA001; } else $crc16 >>= 1; } } return $crc16; } ?>