What is the meaning of the error code 'FFFF' on the READ_REG_QX Function Block Status pin?

搜尋常見問題

This error code is not documented but indicates that the Quantum 140CRP31200 module does not have a minimum firmware version of 1.56. For BMXCRA31210 with BMXNOM0200 communications on a QEIO network, the Quantum 140CRP31200 module requires at least the firmware version of 1.56.