![]() ![]() ![]() TTL this is high speed, differential output 5V (line driver, similar to RS485)įor your encoder it is stated that is HTL/TTL and has a default/factory setting as TTL, but as you said it was programmed for HTL.The output voltage usually is the same as supply voltage push/pull (totem pole) this is preferred by me, it allows long cable and hi.open collector means NPN output - both these types suffer at high frequency and long cable (capacitance).HTL means PNP (positive) 24V output pulses,.You have to carefully read the manual and ask the service if there is something that you don't understand. I had no issues over all these years, not on piece was changed yet. I do use their products over 15 yrs, if there is a need for an encoder it's definitely SICK, no other is more preferred by me.
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