Motion Coordinator Technical Reference Manual
Daughter Boards 4-23
Hardware PSWITCH Daughter Board
Hardware PSWITCH Daughter Board
Trio Product Code P242
Description:
The Hardware PSWITCH Daughter Board is recognised with ATYPE of 10
The hardware PSWITCH daughter board allows 4 open-collector outputs to be
switched ON and OFF at programmed positions. This function is similar to the
software PSWITCH command which is implemented in the system software and
allows outputs to be switched ON and OFF over position sectors. The Hardware
PSWITCH daughter board performs the position comparison in electronics hard-
ware on the daughter board. This allows the pulses generated to be very accu-
rately timed.
Encoder Connections:
The encoder connections for a hardware PSWITCH daughter board are identical
to those on the encoder port of a servo daughter board. The daughter board
encoder input does NOT have registration facilities. The encoder edge rate for
hardware PSWITCH functioning is limited to 500kHz.
Note: PP_STEP = -1 cannot be used to reverse the count direction on this card.
Output Connections:
The hardware PSWITCH daughter board is built as a Stepper Encoder daughter
board with an alternative gate array fitted. The 5 way miniature disconnect con-
nector is used to bring out the open-collector outputs:
B D S E 0v
ENCODER
5 4 3 2 1
9 8 7 6
Pin Function
B
Output Channel 0
D
Output Channel 1
S
Output Channel 2
E
Output Channel 3
0v
Common 0v for outputs
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