Networking terminals with cam controls and PCs
Deutschmann Automation GmbH & Co. KG
20
Instruction manual LOCON 7, LOCON 9 V. 10.4
24.5.04
4.5.4
Connecting the encoder
4.5.4.1
SSI-absolute encoder
If LOCON 7/9 is operated with a SSI-encoder, then the 4 data- and clock-lines of the SSI encoder
are applied to the pins 1 - 4 of the LOCON 7/9 according to chapter "Pin assignment LOCON 7
and LOCON 9".
4.5.4.2
Incremental encoder (A/B-tracks shifted by 90°)
LOCON 7/9 can be operated by an incremental encoder with any resolution, at which point the
limiting values stated in the technical data, have to be kept.
24-Volt-incremental encoders are supported with two tracks A and B (optionally with zero pulse)
shifted by 90°-degree centigrade, that according to the chapter connection elements are wired
(INK_GEBER_A, INK_GEBER_B) .
With the input "CLEAR+" the count of the LOCON 7/9 can be deleted, where at LOCON 7 you
have to pay attention, that the pulse width of the clear-signals is at least 1ms, at LOCON 9 an
pulse width of 1µs is enough.
The input "SelectCount" remains not connected, or is connected with GND.
4.5.4.3
Count-/direction signals
Shall LOCON 7/9 work as incremental cam control with count- and direction signals, this mode
can be adjusted by means of the input "SelectCount" by connecting with 24V.
With each increasing flank it is counted further to one worth at the input "Count^", where the input
"Down" defines the count direction. If this input is not connected, or put to GND it is counted
upwards (+1), at a connection of "Down" with 24V it is counted downwards (-1).
With the input "CLEAR+" the count of LOCON 7/9 can be deleted, where you have to pay atten-
tion, that the pulse width of the clear-signals is at least 1ms (at LOCON 7) or 1µs (at LOCON 9).
With this mode it is possible to construct a very low-priced complete solution, since for instance
an initiator or switch can be inserted as pulse encoder.
The count input urgently has to be debounced, as otherwise every bounce
impulse is evaluated as count pulse.