BGX701-014-R03, User Manual for PT3 Transducers
Sr. No. Error description Error code
1. Illegal function 01
2. Illegal address 02
3. Illegal frame size 04
4. CRC fail 16
Example: Error response when read invalid address
The transducer is configured as a Modbus slave device, with a slave address of 240. If the Master requests to
read holding registers 42020, which is the invalid address. Exception response 02 will be replied by slave.
Request packet
address
Hi
Lo
Lo
Response packet
Slave
address
Function Exception code
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