LiteOn ISA-7 Series - 11.3.6. Read absolute position by DI;DO

Lite-On Technology Corp.
Industrial Automation
230
Timing description:
1. When host controller switch AENC_E signal from OFF to ON, need to wait T
e
for next step.
2. After T
e
, host controller can reset coordinate, switch AENC_C from OFF to ON and hold T
c
,
absolute pulse number and PUU reset to zero.
11.3.5. Initialization by parameter
Coordinate can also be initialized by setting PD-58=111, setting by keypad or communication are both
acceptable. When PD-58 being set as 111, the coordinate will be reset immediately, and other numbers are
invalid.
11.3.6. Read absolute position by DI/DO
If PD-57 Bit 0=0, PUU can be accessed by DI/DO. The format is as follow:
Bit79 ~ Bit64
Bit63 ~ Bit32
Bit31 ~ Bit8
Bit7 ~ Bit0
Check Sum
Encoder PUU
-2147483648 ~ 2147483647
Encoder number of
turns
0
Encoder
status
If PD-57 Bit 0=1, Absolute pulse number can be accessed by DI/DO. The format is as follow:
Bit79 ~ Bit64
Bit63 ~ Bit32
Bit31 ~ Bit8
Bit7 ~ Bit0
Check Sum
Pulse number in a round
0 ~ 131071(=131072-1)
Encoder number of
turns
-32768 ~ 32767
Encoder
status
Check sum calculation is as follow:
Note1: word0=bit0~bit15, word1=bit16~bit31, word2=bit32~bit47, word0=bit48~bit63
Note2: Calculation is unsigned.
Note3: The overflow digital will be abandoned, only 16 bits reserved.