User manual
Accessory 24E2
position compare signal appears both on EQUn, and combined into the EQU output for the first channel
on the IC (EQU1 or EQU5); executed as a logical OR.
MI911 for the first channel on an ASIC performs no effective function, so is always 1. It cannot be set to
0.
MI912 determines which signal or combination of signals, and which polarity, triggers a position capture
of the counter for the encoder mapped to the specified node. If a flag input (home, limit, or user) is used,
MI913 for the node determines which flag. Proper setup of this variable is essential for a successful home
search, which depends on the position-capture function. The following settings may be used:
0: Capture under software control (armed)
1: Capture on Index (CHCn) high
2: Capture on Flag high
3: Capture on (Index high AND Flag high)
4: Capture under software control (latched)
5: Capture on Index (CHCn) low
6: Capture on Flag high
7: Capture on (Index low AND Flag high)
8: Capture under software control (armed)
9: Capture on Index (CHCn) high
10: Capture on Flag low
11: Capture on (Index high AND Flag low)
12: Capture under software control (latched)
13: Capture on Index (CHCn) low
14: Capture on Flag low
15: Capture on (Index low AND Flag low)
The trigger is armed when the position capture register is read. After this, as soon as the Compact
MACRO Station sees that the specified input lines are in the specified states, the trigger will occur — it is
level-trigger, not edge-triggered.
MI913 parameter determines which of the Flag inputs will be used for position capture (if one is used, see
MI912):
0: HMFLn (Home Flag n)
1: PLIMn (Positive End Limit Flag n)
2: MLIMn (Negative End Limit Flag n)
3: USERn (User Flag n)
Typically, this parameter is set to 0 or 3, because in actual use, the LIMn flags create other effects that
usually interfere with what is trying to be accomplished by the position capture. To capture on the LIMn
flags, disable the normal functions with Ix25, or use a channel n where none of the flags is used for the
normal axis functions
Ultralite/MACRO Station Setup 23