Mixing
pymodbus read meter registers
I'm new to modbus but I have a small project to work on. I need to read some values from an energy meter. I wrote this from some examples found in the internet:
import logging
from pymodbus.client.sync import ModbusTcpClient as ModbusClient
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)
client = ModbusClient('192.168.80.210')
client.connect()
rr = client.read_holding_registers(40012, 1)
print rr
client.close()
It seems to be connecting to the meter 'cause this is my output:
DEBUG:pymodbus.transaction:Current transaction state - IDLE
DEBUG:pymodbus.transaction:Running transaction 1
DEBUG:pymodbus.transaction:SEND: 0x0 0x1 0x0 0x0 0x0 0x6 0x0 0x3 0x9c 0x4c 0x0 0x1
DEBUG:pymodbus.client.sync:New Transaction state 'SENDING'
DEBUG:pymodbus.transaction:Changing transaction state from 'SENDING' to 'WAITING FOR REPLY'
DEBUG:pymodbus.transaction:Transaction failed. (Modbus Error: [Invalid Message] Incomplete message received, expected at least 8 bytes (0 received))
DEBUG:pymodbus.framer.socket_framer:Processing:
DEBUG:pymodbus.transaction:Getting transaction 1
DEBUG:pymodbus.transaction:Changing transaction state from 'PROCESSING REPLY' to 'TRANSACTION_COMPLETE'
Modbus Error: [Input/Output] Modbus Error: [Invalid Message] Incomplete message received, expected at least 8 bytes (0 received)
I want to read from register 40012 to 40014 and this is Modbusdbus map I have:
Modbus map
I appreciate your help. Regards,
python modbus modbus-tcp pymodbus
edited Nov 21 '18 at 21:59
Benyamin Jafari
3,19232243
asked Nov 21 '18 at 18:28
Luis Javier Alvarez RodriguezLuis Javier Alvarez Rodriguez
113
add a comment |
I'm new to modbus but I have a small project to work on. I need to read some values from an energy meter. I wrote this from some examples found in the internet:
import logging
from pymodbus.client.sync import ModbusTcpClient as ModbusClient
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)
client = ModbusClient('192.168.80.210')
client.connect()
rr = client.read_holding_registers(40012, 1)
print rr
client.close()
It seems to be connecting to the meter 'cause this is my output:
DEBUG:pymodbus.transaction:Current transaction state - IDLE
DEBUG:pymodbus.transaction:Running transaction 1
DEBUG:pymodbus.transaction:SEND: 0x0 0x1 0x0 0x0 0x0 0x6 0x0 0x3 0x9c 0x4c 0x0 0x1
DEBUG:pymodbus.client.sync:New Transaction state 'SENDING'
DEBUG:pymodbus.transaction:Changing transaction state from 'SENDING' to 'WAITING FOR REPLY'
DEBUG:pymodbus.transaction:Transaction failed. (Modbus Error: [Invalid Message] Incomplete message received, expected at least 8 bytes (0 received))
DEBUG:pymodbus.framer.socket_framer:Processing:
DEBUG:pymodbus.transaction:Getting transaction 1
DEBUG:pymodbus.transaction:Changing transaction state from 'PROCESSING REPLY' to 'TRANSACTION_COMPLETE'
Modbus Error: [Input/Output] Modbus Error: [Invalid Message] Incomplete message received, expected at least 8 bytes (0 received)
I want to read from register 40012 to 40014 and this is Modbusdbus map I have:
Modbus map
I appreciate your help. Regards,
python modbus modbus-tcp pymodbus
edited Nov 21 '18 at 21:59
Benyamin Jafari
3,19232243
asked Nov 21 '18 at 18:28
Luis Javier Alvarez RodriguezLuis Javier Alvarez Rodriguez
113
add a comment |
I'm new to modbus but I have a small project to work on. I need to read some values from an energy meter. I wrote this from some examples found in the internet:
import logging
from pymodbus.client.sync import ModbusTcpClient as ModbusClient
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)
client = ModbusClient('192.168.80.210')
client.connect()
rr = client.read_holding_registers(40012, 1)
print rr
client.close()
It seems to be connecting to the meter 'cause this is my output:
DEBUG:pymodbus.transaction:Current transaction state - IDLE
DEBUG:pymodbus.transaction:Running transaction 1
DEBUG:pymodbus.transaction:SEND: 0x0 0x1 0x0 0x0 0x0 0x6 0x0 0x3 0x9c 0x4c 0x0 0x1
DEBUG:pymodbus.client.sync:New Transaction state 'SENDING'
DEBUG:pymodbus.transaction:Changing transaction state from 'SENDING' to 'WAITING FOR REPLY'
DEBUG:pymodbus.transaction:Transaction failed. (Modbus Error: [Invalid Message] Incomplete message received, expected at least 8 bytes (0 received))
DEBUG:pymodbus.framer.socket_framer:Processing:
DEBUG:pymodbus.transaction:Getting transaction 1
DEBUG:pymodbus.transaction:Changing transaction state from 'PROCESSING REPLY' to 'TRANSACTION_COMPLETE'
Modbus Error: [Input/Output] Modbus Error: [Invalid Message] Incomplete message received, expected at least 8 bytes (0 received)
I want to read from register 40012 to 40014 and this is Modbusdbus map I have:
Modbus map
I appreciate your help. Regards,
python modbus modbus-tcp pymodbus
edited Nov 21 '18 at 21:59
Benyamin Jafari
3,19232243
asked Nov 21 '18 at 18:28
Luis Javier Alvarez RodriguezLuis Javier Alvarez Rodriguez
113
I'm new to modbus but I have a small project to work on. I need to read some values from an energy meter. I wrote this from some examples found in the internet:
import logging
from pymodbus.client.sync import ModbusTcpClient as ModbusClient
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)
client = ModbusClient('192.168.80.210')
client.connect()
rr = client.read_holding_registers(40012, 1)
print rr
client.close()
It seems to be connecting to the meter 'cause this is my output:
DEBUG:pymodbus.transaction:Current transaction state - IDLE
DEBUG:pymodbus.transaction:Running transaction 1
DEBUG:pymodbus.transaction:SEND: 0x0 0x1 0x0 0x0 0x0 0x6 0x0 0x3 0x9c 0x4c 0x0 0x1
DEBUG:pymodbus.client.sync:New Transaction state 'SENDING'
DEBUG:pymodbus.transaction:Changing transaction state from 'SENDING' to 'WAITING FOR REPLY'
DEBUG:pymodbus.transaction:Transaction failed. (Modbus Error: [Invalid Message] Incomplete message received, expected at least 8 bytes (0 received))
DEBUG:pymodbus.framer.socket_framer:Processing:
DEBUG:pymodbus.transaction:Getting transaction 1
DEBUG:pymodbus.transaction:Changing transaction state from 'PROCESSING REPLY' to 'TRANSACTION_COMPLETE'
Modbus Error: [Input/Output] Modbus Error: [Invalid Message] Incomplete message received, expected at least 8 bytes (0 received)
I want to read from register 40012 to 40014 and this is Modbusdbus map I have:
Modbus map
I appreciate your help. Regards,
python modbus modbus-tcp pymodbus
python modbus modbus-tcp pymodbus
edited Nov 21 '18 at 21:59
Benyamin Jafari
3,19232243
asked Nov 21 '18 at 18:28
Luis Javier Alvarez RodriguezLuis Javier Alvarez Rodriguez
113
edited Nov 21 '18 at 21:59
Benyamin Jafari
3,19232243
asked Nov 21 '18 at 18:28
Luis Javier Alvarez RodriguezLuis Javier Alvarez Rodriguez
113
edited Nov 21 '18 at 21:59
Benyamin Jafari
3,19232243
edited Nov 21 '18 at 21:59
Benyamin Jafari
3,19232243
edited Nov 21 '18 at 21:59
Benyamin Jafari
3,19232243
3,19232243
asked Nov 21 '18 at 18:28
Luis Javier Alvarez RodriguezLuis Javier Alvarez Rodriguez
113
asked Nov 21 '18 at 18:28
Luis Javier Alvarez RodriguezLuis Javier Alvarez Rodriguez
113
asked Nov 21 '18 at 18:28
Luis Javier Alvarez RodriguezLuis Javier Alvarez Rodriguez
113
113
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
I think you should set the unit and port argument, and for getting the value use the rr.registers, so you need to know the unit_ID value, and the device port.
In most cases, the unit is 1 and the port is 502 as the modbus default.
If you want to read from address 40012 to 40014, you could read from 40012 as a bulky reading with count=3.
I improved your code, try it:
from pymodbus.client.sync import ModbusTcpClient
client = ModbusTcpClient('192.168.80.210', port=502)
if client.connect():
res = client.read_holding_registers(40012, count=3, unit=1)
if not res.isError():
'''.isError() was implemented in pymodbus version 1.4.0 and above.'''
print(res.registers)
else:
# handling error
print(res)
client.close()
answered Nov 21 '18 at 21:55
Benyamin JafariBenyamin Jafari
3,19232243
Thank! you are right. I was missing unit, in this case the unit is 100, now I have registers returning from the device.
– Luis Javier Alvarez Rodriguez
Nov 21 '18 at 23:03
@LuisJavierAlvarezRodriguez good luck, with upvote we could improve the Stack Overflow question/answer, and the minimum reputation for upvotes is 15.
– Benyamin Jafari
Nov 22 '18 at 13:29
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I think you should set the unit and port argument, and for getting the value use the rr.registers, so you need to know the unit_ID value, and the device port.
In most cases, the unit is 1 and the port is 502 as the modbus default.
If you want to read from address 40012 to 40014, you could read from 40012 as a bulky reading with count=3.
I improved your code, try it:
from pymodbus.client.sync import ModbusTcpClient
client = ModbusTcpClient('192.168.80.210', port=502)
if client.connect():
res = client.read_holding_registers(40012, count=3, unit=1)
if not res.isError():
'''.isError() was implemented in pymodbus version 1.4.0 and above.'''
print(res.registers)
else:
# handling error
print(res)
client.close()
answered Nov 21 '18 at 21:55
Benyamin JafariBenyamin Jafari
3,19232243
Thank! you are right. I was missing unit, in this case the unit is 100, now I have registers returning from the device.
– Luis Javier Alvarez Rodriguez
Nov 21 '18 at 23:03
@LuisJavierAlvarezRodriguez good luck, with upvote we could improve the Stack Overflow question/answer, and the minimum reputation for upvotes is 15.
– Benyamin Jafari
Nov 22 '18 at 13:29
add a comment |
I think you should set the unit and port argument, and for getting the value use the rr.registers, so you need to know the unit_ID value, and the device port.
In most cases, the unit is 1 and the port is 502 as the modbus default.
If you want to read from address 40012 to 40014, you could read from 40012 as a bulky reading with count=3.
I improved your code, try it:
from pymodbus.client.sync import ModbusTcpClient
client = ModbusTcpClient('192.168.80.210', port=502)
if client.connect():
res = client.read_holding_registers(40012, count=3, unit=1)
if not res.isError():
'''.isError() was implemented in pymodbus version 1.4.0 and above.'''
print(res.registers)
else:
# handling error
print(res)
client.close()
answered Nov 21 '18 at 21:55
Benyamin JafariBenyamin Jafari
3,19232243
Thank! you are right. I was missing unit, in this case the unit is 100, now I have registers returning from the device.
– Luis Javier Alvarez Rodriguez
Nov 21 '18 at 23:03
@LuisJavierAlvarezRodriguez good luck, with upvote we could improve the Stack Overflow question/answer, and the minimum reputation for upvotes is 15.
– Benyamin Jafari
Nov 22 '18 at 13:29
add a comment |
I think you should set the unit and port argument, and for getting the value use the rr.registers, so you need to know the unit_ID value, and the device port.
In most cases, the unit is 1 and the port is 502 as the modbus default.
If you want to read from address 40012 to 40014, you could read from 40012 as a bulky reading with count=3.
I improved your code, try it:
from pymodbus.client.sync import ModbusTcpClient
client = ModbusTcpClient('192.168.80.210', port=502)
if client.connect():
res = client.read_holding_registers(40012, count=3, unit=1)
if not res.isError():
'''.isError() was implemented in pymodbus version 1.4.0 and above.'''
print(res.registers)
else:
# handling error
print(res)
client.close()
answered Nov 21 '18 at 21:55
Benyamin JafariBenyamin Jafari
3,19232243
I think you should set the unit and port argument, and for getting the value use the rr.registers, so you need to know the unit_ID value, and the device port.
In most cases, the unit is 1 and the port is 502 as the modbus default.
If you want to read from address 40012 to 40014, you could read from 40012 as a bulky reading with count=3.
I improved your code, try it:
from pymodbus.client.sync import ModbusTcpClient
client = ModbusTcpClient('192.168.80.210', port=502)
if client.connect():
res = client.read_holding_registers(40012, count=3, unit=1)
if not res.isError():
'''.isError() was implemented in pymodbus version 1.4.0 and above.'''
print(res.registers)
else:
# handling error
print(res)
client.close()
answered Nov 21 '18 at 21:55
Benyamin JafariBenyamin Jafari
3,19232243
answered Nov 21 '18 at 21:55
Benyamin JafariBenyamin Jafari
3,19232243
answered Nov 21 '18 at 21:55
Benyamin JafariBenyamin Jafari
3,19232243
answered Nov 21 '18 at 21:55
Benyamin JafariBenyamin Jafari
3,19232243
3,19232243
Thank! you are right. I was missing unit, in this case the unit is 100, now I have registers returning from the device.
– Luis Javier Alvarez Rodriguez
Nov 21 '18 at 23:03
@LuisJavierAlvarezRodriguez good luck, with upvote we could improve the Stack Overflow question/answer, and the minimum reputation for upvotes is 15.
– Benyamin Jafari
Nov 22 '18 at 13:29
add a comment |
Thank! you are right. I was missing unit, in this case the unit is 100, now I have registers returning from the device.
– Luis Javier Alvarez Rodriguez
Nov 21 '18 at 23:03
@LuisJavierAlvarezRodriguez good luck, with upvote we could improve the Stack Overflow question/answer, and the minimum reputation for upvotes is 15.
– Benyamin Jafari
Nov 22 '18 at 13:29
Thank! you are right. I was missing unit, in this case the unit is 100, now I have registers returning from the device.
– Luis Javier Alvarez Rodriguez
Nov 21 '18 at 23:03
Thank! you are right. I was missing unit, in this case the unit is 100, now I have registers returning from the device.
– Luis Javier Alvarez Rodriguez
Nov 21 '18 at 23:03
@LuisJavierAlvarezRodriguez good luck, with upvote we could improve the Stack Overflow question/answer, and the minimum reputation for upvotes is 15.
– Benyamin Jafari
Nov 22 '18 at 13:29
@LuisJavierAlvarezRodriguez good luck, with upvote we could improve the Stack Overflow question/answer, and the minimum reputation for upvotes is 15.
– Benyamin Jafari
Nov 22 '18 at 13:29
add a comment |
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