Applied Motion RS-232 - Manual (Page 293)

293 920-0002 Rev. I
2/2013
Host Command Reference
Type 2 Message Examples
Example 1: parameter write
AC100 set acceleration rate to 100 rev/sec/sec (6000 rpm/sec)
opcode 0x83 parameter write, from Table 2
operand 0x1E from Table 3
data 0x258 units are 10 rpm/sec, so 6000/sec is represented by 600 decimal = 258 hex
Type 2 Command Message Payload Type 2 Response Message Payload
byte 0 0 reserved byte 0 0 reserved
byte 1 2 message type byte 1 2 message type
byte 2 83 opcode byte 2 83 opcode
byte 3 1E operand byte 3 1E operand
byte 4 2 data MSB byte 4 ? Status Code MSB
byte 5 58 data LSB byte 5 ? Status Code LSB
byte 6 0 not used byte 6 0 not used
byte 7 0 not used byte 7 0 not used
Example 2: parameter read
AC read back the acceleration rate
opcode 0x84 parameter read, from Table 2
operand 0x1E from Table 3
return value 0x258 units are 10 rpm/sec, so 6000/sec is represented by 600 decimal = 258 hex
Type 2 Command Message Payload Type 2 Response Message Payload
byte 0 0 reserved byte 0 0 reserved
byte 1 2 message type byte 1 2 message type
byte 2 84 opcode byte 2 84 opcode
byte 3 1E operand byte 3 1E operand
byte 4 0 not used byte 4 2 read data MSB
byte 5 0 not used byte 5 58 read data LSB
byte 6 0 not used byte 6 0 not used
byte 7 0 not used byte 7 0 not used