FAQ

How do you set the MU-4 to binary mode when turning on the power?

To allow the module to enter binary mode when power is applied, first save the setting in the mode register by issuing “”@MDBI/W””. Then make sure the MODE terminal is Low when applying power.

When using the MU4 with MU4-RS2IF, the MODE is set using the DTR terminal of the RS232 port.