Shihlin electric SDP Series, Manual

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13.2.4
Use parameter settings to initialize absolute coordinates
You can write PA29 to perform absolute coordinate initialization by panel operation or
communication command. When PA29 is set to 1, the absolute coordinates will be reset
immediately. Please use the homing to initialize the coordinates in Pr mode.
Bit79~Bit64 Bit63 ~ Bit32 Bit31 ~ Bit16 Bit15 ~ Bit0
Check Sum Encoder pulse number per
revolution
0 ~ 4194304 (22bit Encoder)
Encode revolution
number
-32768 ~ +32767 PA31 encoder
status
Checksum method description:
Check Sum = ((((((0xA700) xor 0x605A) xor 0x30A5)
xor 0x5A06
Remind:
1.
The algorithm has no sign.
2.
0xA700, 0x605A, 0x30A5, 0x5A06 are hexadecimal constants.
3.
WORD_0: encoder status(Bit15 ~ Bit0)
WORD_1: encoder revolution number(Bit31~Bit16)
WORD_2: encoder pulse number(Bit47 ~ Bit32)
WORD_3: encoder pulse number(Bit63 ~ Bit48)
XOR
WORD_0
0xA700
WORD_1
0x605A
XOR
WORD_2
0x30A5
XOR
WORD_3
0x5A06
Check Sum