
B--65245EN/02
3. PERIPHERAL EQUIPMENT CONTROLHANDLING
89
A parameter to be rewritten is specified using the following command:
Command (host → servo amplifier unit)
#7 #6 #5 #4 #3 #2 #1 #0
Yy+2 Function code Command data 1
Yy+3
Yy+4 Command data 2
Yy+5
Yy+6
Function code :12
Command data 1 : 1 : Rewrites a byte parameter.
2 : Rewrites a word parameter.
3 : Rewrites a double --word parameter (firsttime).
B : Rewrites a double--word parameter (second
time).
Command data 2 : Sets the number of a parameter to be rewritten in
Yy+3 and Yy+4.
Sets the value of a parameter to be rewritten in
Yy+5 and Yy+6.
Data type
1) B yte type
#7 #6 #5 #4 #3 #2 #1 #0
Yy+5
Example: Number 22, data 5
Yy+3 = 16 (hexadecimal], Yy+4 = 00
Yy+5 = 05 [hexadecimal], Yy+6 = 00
2) Word type
#7 #6 #5 #4 #3 #2 #1 #0
Yy+5 Lower byte
Yy+6 Higher byte
Data = higher byte × 256 + lower byte
S When rewriting a double--word parameter, divide the value of the
parameter into t wo for two specifications.
Example: Number 140, data 500000
500000 = 0007A120 [hexadecimal]
First time:
Yy+3 = 8C [hexadecimal], Yy+4 = 00
Yy+5 = 20 [hexadecimal], Yy+6 = A1 [hexadecimal]
Second time:
Yy+3 = 8C [hexadecimal], Yy+4 = 00
Yy+5 = 07 [hexadecimal], Yy+6 = 00
3.4.8.3
Peripheral equipment
control command format