Fastech Ezi-Step II Plus-E MINI, Руководство пользователя, Страница: 26 / 62

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Control I/O Signal
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3) Position Table A0 –A7 (PT A0~A7) Input
The position table supports the machine so that its motion can be controlled by I/O
signals of central controller. It can directly transmit commands such as position table
number, start/stop and origin return to the machine through the PLC. Also, the user can
check output signals such as in-position, completion of origin return and Servo ready
through the PLC.
「Position Table A0~A7」 Inputs are total 8 bits of input signal. It is used to set
256
position table numbers(Command step). There are two application methods as follows.
1) To set position table number (0~255) to be set by 「PT start」 input signal.
2) To set position table number (0~255) to save current position values by 「Teaching」
input signal.
By using PT A0~A7 signals, the position table address can be set from 0 to 255 with a
binary number. A0 is LSB(least significant bit) and A7 is MSB(most significant bit). The
following table shows how to assign position table number.
*1. Save signal cabling: If ‘PT A0~A7’signal is not designated when motioning by
‘PT Start’ signal, the position table number will be ‘0’.
A7 A6 A5 ~ A3 A2 A1 A0 PT No.
0 0 0 0 0 0 0
0 0 0 0 0 1 1
0 0 0 0 1 0 2
0 0 0 0 1 1 3
0 0 0 1 0 0 4
… … … … … … … … … … … … … … … … … …
1 1 1 1 1 0 254
1 1 1 1 1 1 255
*2. ‘PT A5/UserIN 6’ ‘PT A6/UserIN 7’ ‘PT A7/UserIN 8’ signal setting :
This signal can be used as 'PT A5~A7’ when PT function is used, and also can be used as
‘User IN6~IN8’ signal when the input signal ‘User IN0~IN5’ is not enough.