Hikvision PTZ's disconnect

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Feb 10, 2018
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Hi people

Once or twice a year one or both of my PTZ's (DS-2DE4215IW) disconnect from the DVR, normally a bit of messing about with SDAP, power direct to the PTZ and they work again.

but this time they are not reconnecting to the DVR (Hikvision 7716)

if i connect them to a POE switch (netgear GS324TP) and force the switch to 4pt 802.3af + legacy , they spring to life.

Question

is there a setting on the hikvision 7716 that can turn off the POE or change the standard of POE ?

anything to make the DVR see the PTZ's again.

firmware version of the 7716 is v3.4.96 build 170921.

if you need any more info just ask

TIA
 
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