Hello for all,
I communicate between our PLC and the Gateway in Modbus TCP.
I’m working with ignition 7.9.7
I have had a Device Modbus TCP with those adresses below
10
NUM_8_,4000,4255,false,0,InputRegister,4000
NUM_9_,4256,4511,false,0,InputRegister,4256
TC_ON_0_,7000,7255,false,0,Coil,7000
TC_OFF_0_,8000,8255,false,0,Coil,8000
DISC_0_,2000,2255,false,0,DiscreteInput,2000
AL_2_3_,3000,3511,false,0,DiscreteInput,3000
CAPT_1_,1000,1255,false,0,DiscreteInput,1000
ST_0_,0,255,false,0,DiscreteInput,0
I have add 256 tags like this in html format
6 Ignition OPC-UA Server ns=1;s=[Slave_12]TC_ON_0_7000 6and the last one in this range (7000 … 7255)
I have catch the modbus communication with Wireshark.
There is a Modbus Query like THIS READ COILS from adresse 7000 and Bit Count 1006
1006 is out of range from the adresse describe above (7000 … 7255) —> 256 bits not 1006
Thanks for Help
Olivier