Mixing
pymodbus Exception Response(131, 3, IllegalAddress)
I'm trying to run this piece of code:
from pymodbus.client.sync import ModbusSerialClient as ModbusClient
import logging
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)
client = ModbusClient(method='rtu', baudrate=9600, parity='E', port='/dev/ttyUSB0', timeout=1)
client.connect()
rr = client.read_holding_registers(40000, 7, unit=0x01)
print rr
client.close()
But I get only this:
DEBUG:pymodbus.transaction:Running transaction 1
DEBUG:pymodbus.factory:Factory Response[131]
DEBUG:pymodbus.transaction:adding transaction 0
DEBUG:pymodbus.transaction:getting transaction 1
Exception Response(131, 3, IllegalAddress)
On the other hand this C code (using libmodbus) is working:
modbus_t *mb;
int16_t hregs[9];
mb = modbus_new_rtu('/dev/ttyUSB0', 9600, 'E', 8, 1);
modbus_set_slave(mb, 1);
modbus_read_registers(mb, 0x40000, 7, hregs)
What am I doing wrong?
python modbus pymodbus
edited Jan 1 at 11:53
Benyamin Jafari
3,39332248
asked Oct 21 '15 at 16:21
Dmitry MisharovDmitry Misharov
318
add a comment |
I'm trying to run this piece of code:
from pymodbus.client.sync import ModbusSerialClient as ModbusClient
import logging
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)
client = ModbusClient(method='rtu', baudrate=9600, parity='E', port='/dev/ttyUSB0', timeout=1)
client.connect()
rr = client.read_holding_registers(40000, 7, unit=0x01)
print rr
client.close()
But I get only this:
DEBUG:pymodbus.transaction:Running transaction 1
DEBUG:pymodbus.factory:Factory Response[131]
DEBUG:pymodbus.transaction:adding transaction 0
DEBUG:pymodbus.transaction:getting transaction 1
Exception Response(131, 3, IllegalAddress)
On the other hand this C code (using libmodbus) is working:
modbus_t *mb;
int16_t hregs[9];
mb = modbus_new_rtu('/dev/ttyUSB0', 9600, 'E', 8, 1);
modbus_set_slave(mb, 1);
modbus_read_registers(mb, 0x40000, 7, hregs)
What am I doing wrong?
python modbus pymodbus
edited Jan 1 at 11:53
Benyamin Jafari
3,39332248
asked Oct 21 '15 at 16:21
Dmitry MisharovDmitry Misharov
318
1
Are you sure your libmodbus code is working? You're reading address 0x40000 (262144), no Modbus slave will accept this address.
– Ronaldo
Oct 21 '15 at 17:44
Yes, I'm sure that C code is working.
– Dmitry Misharov
Oct 21 '15 at 23:16
Did you try with0x40000or0x400(as a default in many cases)?0x40000(hexadecimal) have different with40000(decimal)
– Benyamin Jafari
Jan 1 at 11:55
add a comment |
I'm trying to run this piece of code:
from pymodbus.client.sync import ModbusSerialClient as ModbusClient
import logging
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)
client = ModbusClient(method='rtu', baudrate=9600, parity='E', port='/dev/ttyUSB0', timeout=1)
client.connect()
rr = client.read_holding_registers(40000, 7, unit=0x01)
print rr
client.close()
But I get only this:
DEBUG:pymodbus.transaction:Running transaction 1
DEBUG:pymodbus.factory:Factory Response[131]
DEBUG:pymodbus.transaction:adding transaction 0
DEBUG:pymodbus.transaction:getting transaction 1
Exception Response(131, 3, IllegalAddress)
On the other hand this C code (using libmodbus) is working:
modbus_t *mb;
int16_t hregs[9];
mb = modbus_new_rtu('/dev/ttyUSB0', 9600, 'E', 8, 1);
modbus_set_slave(mb, 1);
modbus_read_registers(mb, 0x40000, 7, hregs)
What am I doing wrong?
python modbus pymodbus
edited Jan 1 at 11:53
Benyamin Jafari
3,39332248
asked Oct 21 '15 at 16:21
Dmitry MisharovDmitry Misharov
318
I'm trying to run this piece of code:
from pymodbus.client.sync import ModbusSerialClient as ModbusClient
import logging
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)
client = ModbusClient(method='rtu', baudrate=9600, parity='E', port='/dev/ttyUSB0', timeout=1)
client.connect()
rr = client.read_holding_registers(40000, 7, unit=0x01)
print rr
client.close()
But I get only this:
DEBUG:pymodbus.transaction:Running transaction 1
DEBUG:pymodbus.factory:Factory Response[131]
DEBUG:pymodbus.transaction:adding transaction 0
DEBUG:pymodbus.transaction:getting transaction 1
Exception Response(131, 3, IllegalAddress)
On the other hand this C code (using libmodbus) is working:
modbus_t *mb;
int16_t hregs[9];
mb = modbus_new_rtu('/dev/ttyUSB0', 9600, 'E', 8, 1);
modbus_set_slave(mb, 1);
modbus_read_registers(mb, 0x40000, 7, hregs)
What am I doing wrong?
python modbus pymodbus
python modbus pymodbus
edited Jan 1 at 11:53
Benyamin Jafari
3,39332248
asked Oct 21 '15 at 16:21
Dmitry MisharovDmitry Misharov
318
edited Jan 1 at 11:53
Benyamin Jafari
3,39332248
asked Oct 21 '15 at 16:21
Dmitry MisharovDmitry Misharov
318
edited Jan 1 at 11:53
Benyamin Jafari
3,39332248
edited Jan 1 at 11:53
Benyamin Jafari
3,39332248
edited Jan 1 at 11:53
Benyamin Jafari
3,39332248
3,39332248
asked Oct 21 '15 at 16:21
Dmitry MisharovDmitry Misharov
318
asked Oct 21 '15 at 16:21
Dmitry MisharovDmitry Misharov
318
asked Oct 21 '15 at 16:21
Dmitry MisharovDmitry Misharov
318
318
1
Are you sure your libmodbus code is working? You're reading address 0x40000 (262144), no Modbus slave will accept this address.
– Ronaldo
Oct 21 '15 at 17:44
Yes, I'm sure that C code is working.
– Dmitry Misharov
Oct 21 '15 at 23:16
Did you try with0x40000or0x400(as a default in many cases)?0x40000(hexadecimal) have different with40000(decimal)
– Benyamin Jafari
Jan 1 at 11:55
add a comment |
1
Are you sure your libmodbus code is working? You're reading address 0x40000 (262144), no Modbus slave will accept this address.
– Ronaldo
Oct 21 '15 at 17:44
Yes, I'm sure that C code is working.
– Dmitry Misharov
Oct 21 '15 at 23:16
Did you try with0x40000or0x400(as a default in many cases)?0x40000(hexadecimal) have different with40000(decimal)
– Benyamin Jafari
Jan 1 at 11:55
1
1
Are you sure your libmodbus code is working? You're reading address 0x40000 (262144), no Modbus slave will accept this address.
– Ronaldo
Oct 21 '15 at 17:44
Are you sure your libmodbus code is working? You're reading address 0x40000 (262144), no Modbus slave will accept this address.
– Ronaldo
Oct 21 '15 at 17:44
Yes, I'm sure that C code is working.
– Dmitry Misharov
Oct 21 '15 at 23:16
Yes, I'm sure that C code is working.
– Dmitry Misharov
Oct 21 '15 at 23:16
Did you try with
0x40000 or 0x400 (as a default in many cases)? 0x40000 (hexadecimal) have different with 40000 (decimal)– Benyamin Jafari
Jan 1 at 11:55
Did you try with
0x40000 or 0x400 (as a default in many cases)? 0x40000 (hexadecimal) have different with 40000 (decimal)– Benyamin Jafari
Jan 1 at 11:55
add a comment |
2 Answers
2
active
oldest
votes
I am assuming you want to read the first seven holding registers. In that case, the address to be given to the read_holding_registers function is 0. The function implicitly adds the offset of 40000 for holding registers.
So, try changing your read code to this
rr = client.read_holding_registers(0, 7, unit=0x01)
answered Oct 31 '17 at 3:49
BhavinBhavin
4614
add a comment |
Exception Response(131, 3, IllegalAddress) means:
A value contained in the query data field is not an allowable value for the slave. This indicates a fault in the structure of remainder of a complex request, such as that the implied length is incorrect. It specifically does NOT mean that a data item submitted for storage in a register has a value outside the expectation of the application program, since the MODBUS protocol is unaware of the significance of any particular value of any particular register.
http://www.simplymodbus.ca/exceptions.htm
[UPDATE]:
Did you try with 0x40000 or 0x400 (as a default in many cases)? 0x40000 (hexadecimal) have different with 40000 (decimal)
answered Dec 10 '17 at 8:54
Benyamin JafariBenyamin Jafari
3,39332248
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
I am assuming you want to read the first seven holding registers. In that case, the address to be given to the read_holding_registers function is 0. The function implicitly adds the offset of 40000 for holding registers.
So, try changing your read code to this
rr = client.read_holding_registers(0, 7, unit=0x01)
answered Oct 31 '17 at 3:49
BhavinBhavin
4614
add a comment |
I am assuming you want to read the first seven holding registers. In that case, the address to be given to the read_holding_registers function is 0. The function implicitly adds the offset of 40000 for holding registers.
So, try changing your read code to this
rr = client.read_holding_registers(0, 7, unit=0x01)
answered Oct 31 '17 at 3:49
BhavinBhavin
4614
add a comment |
I am assuming you want to read the first seven holding registers. In that case, the address to be given to the read_holding_registers function is 0. The function implicitly adds the offset of 40000 for holding registers.
So, try changing your read code to this
rr = client.read_holding_registers(0, 7, unit=0x01)
answered Oct 31 '17 at 3:49
BhavinBhavin
4614
I am assuming you want to read the first seven holding registers. In that case, the address to be given to the read_holding_registers function is 0. The function implicitly adds the offset of 40000 for holding registers.
So, try changing your read code to this
rr = client.read_holding_registers(0, 7, unit=0x01)
answered Oct 31 '17 at 3:49
BhavinBhavin
4614
answered Oct 31 '17 at 3:49
BhavinBhavin
4614
answered Oct 31 '17 at 3:49
BhavinBhavin
4614
answered Oct 31 '17 at 3:49
BhavinBhavin
4614
4614
add a comment |
add a comment |
Exception Response(131, 3, IllegalAddress) means:
A value contained in the query data field is not an allowable value for the slave. This indicates a fault in the structure of remainder of a complex request, such as that the implied length is incorrect. It specifically does NOT mean that a data item submitted for storage in a register has a value outside the expectation of the application program, since the MODBUS protocol is unaware of the significance of any particular value of any particular register.
http://www.simplymodbus.ca/exceptions.htm
[UPDATE]:
Did you try with 0x40000 or 0x400 (as a default in many cases)? 0x40000 (hexadecimal) have different with 40000 (decimal)
answered Dec 10 '17 at 8:54
Benyamin JafariBenyamin Jafari
3,39332248
add a comment |
Exception Response(131, 3, IllegalAddress) means:
A value contained in the query data field is not an allowable value for the slave. This indicates a fault in the structure of remainder of a complex request, such as that the implied length is incorrect. It specifically does NOT mean that a data item submitted for storage in a register has a value outside the expectation of the application program, since the MODBUS protocol is unaware of the significance of any particular value of any particular register.
http://www.simplymodbus.ca/exceptions.htm
[UPDATE]:
Did you try with 0x40000 or 0x400 (as a default in many cases)? 0x40000 (hexadecimal) have different with 40000 (decimal)
answered Dec 10 '17 at 8:54
Benyamin JafariBenyamin Jafari
3,39332248
add a comment |
Exception Response(131, 3, IllegalAddress) means:
A value contained in the query data field is not an allowable value for the slave. This indicates a fault in the structure of remainder of a complex request, such as that the implied length is incorrect. It specifically does NOT mean that a data item submitted for storage in a register has a value outside the expectation of the application program, since the MODBUS protocol is unaware of the significance of any particular value of any particular register.
http://www.simplymodbus.ca/exceptions.htm
[UPDATE]:
Did you try with 0x40000 or 0x400 (as a default in many cases)? 0x40000 (hexadecimal) have different with 40000 (decimal)
answered Dec 10 '17 at 8:54
Benyamin JafariBenyamin Jafari
3,39332248
Exception Response(131, 3, IllegalAddress) means:
A value contained in the query data field is not an allowable value for the slave. This indicates a fault in the structure of remainder of a complex request, such as that the implied length is incorrect. It specifically does NOT mean that a data item submitted for storage in a register has a value outside the expectation of the application program, since the MODBUS protocol is unaware of the significance of any particular value of any particular register.
http://www.simplymodbus.ca/exceptions.htm
[UPDATE]:
Did you try with 0x40000 or 0x400 (as a default in many cases)? 0x40000 (hexadecimal) have different with 40000 (decimal)
answered Dec 10 '17 at 8:54
Benyamin JafariBenyamin Jafari
3,39332248
edited Jan 1 at 11:56
answered Dec 10 '17 at 8:54
Benyamin JafariBenyamin Jafari
3,39332248
answered Dec 10 '17 at 8:54
Benyamin JafariBenyamin Jafari
3,39332248
answered Dec 10 '17 at 8:54
Benyamin JafariBenyamin Jafari
3,39332248
3,39332248
add a comment |
add a comment |
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1
Are you sure your libmodbus code is working? You're reading address 0x40000 (262144), no Modbus slave will accept this address.
– Ronaldo
Oct 21 '15 at 17:44
Yes, I'm sure that C code is working.
– Dmitry Misharov
Oct 21 '15 at 23:16
Did you try with
0x40000or0x400(as a default in many cases)?0x40000(hexadecimal) have different with40000(decimal)– Benyamin Jafari
Jan 1 at 11:55