User Manual of EM730 Series Inverter Error PDU to “1: SVC”. Below is an example of a request to change the drive control mode of the motor 1 (F00.01) ★ The function code 0x06 cannot be used if modified frequently, in order to avoid damage to the inverter. The user-defined function code 0x41 “change without saving” corresponds to the standard common function code 0x06. Its definition is the same as that of the corresponding standard function code (the same request, response and error PDU). The difference is that when the slave responds to this user-defined function code, the corresponding value of RAM is changed only and not stored in EEPROM (holding register).
function code 0x41 (you can change the main frequency source A by directly setting 7001H, as For the function codes (e.g. F00.07) that are often modified, it is recommended to use the detailed in 1.1.1.2 and 11.3.4), to avoid damage to the inverter. The specific operation is as follows.
377 Error code 1 byte 0x86 Exception code 1 byte SeeTable 4-33 Request Respond Domain name (0x) Domain name (normal) (0x) Domain name (abnormal) (0x) Function 06 Function 06 Function 86 Register address Hi 00 Register address Hi 00 Exception code 03 Register address Lo 01 Register address Lo 01 Register value Hi 00 Register value Hi 00 Register value Lo 01 Register value Lo 01 Request Respond Domain name (0x) Domain name (normal) (0x) Function 41 Function 41 Register address Hi 00 Register address Hi 00 Register address Lo 07 Register address Lo 07 Register value Hi 13 Register value Hi 13 Register value Lo 88 Register value Lo 88