Nidec Unidrive M700 - Setting the Destination Slot and Menu

SI-Ethernet User Guide 155
Issue: 3
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As an example, the following code may be used in the user program:
// Set the IP address
WWWXXX% = ((www% << 8) & 0x0000FF00) | (xxx% & 0x000000FF)
YYYZZZ% = ((yyy% << 8) & 0x0000FF00) | (zzz% & 0x000000FF)
// Handle the casting from 32bit variable to 16bit parameter
IF WWWXXX% > 32767 THEN
// Subtract 65536
WWWXXX% = WWWXXX% - 65536
ENDIF
IF YYYZZZ% > 32767 THEN
// Subtract 65536
YYYZZZ% = YYYZZZ% - 65536
ENDIF
7.4.2 Setting the destination slot and menu (Base address + 3)
The destination slot and menu address is sent in the format SMM, where S is the slot number and
MM is the two digit menu number.
Examples
• For the drive application menu 3, the value sent would be “20”.
• For the SI-Applications Plus register 70 in slot 3, the value sent would be “370”.
7.4.3 Setting the destination parameter address (Base address + 4)
The destination parameter address is sent in the format PPP, where PPP is the three digit
parameter number.
Examples
• For parameter “021”, the value sent would be “21”.
• For parameter “104”, the value sent would be “104”.
7.4.4 Setting the parameter value to write
The destination parameter value is sent in two signed 16-bit values, therefore it must be converted
into two signed 16-bit words.
Base address + 5 (LSW)
The least significant word of the parameter value is converted to a signed 16-bit value stored in a
32-bit variable by bitwise ANDing it with the hexadecimal value 0x00007FFF and subtracting the
decimal value 32768 if the result was greater than the decimal value 32767.
Only menus numbers 0 to 99 are possible using this method.
NOTE