I want to read pac3200's digital input status from profinet.

I want to control ( make on off) pac3200's digital output from master plc.

Problem started with digital input side. Normally there must be COM in the device, when I make short circuit between com and DI, then digital input status must be 1. but this device is little bit strange. there is no COM terminal.  there is DI+  and DI-.  Device is supplied by 220VAC. so DI+ must be 220VAC  and DI- must be neutral ??? In the manual they don't mention about voltage level.So I'm frightened to supply DI with 220VAC. There is referance terminal which must be grounded according to manual. I made short circuit between DI+ and DI- nothing happened.I read 50VAC at referance terminal.

About digital output side. Normally there must be one bit, when I make it 1 in plc, then pac3200's digital output must be 1. when I make it 0, then pac3200's digital output must be 0. But in the plc, there is 4 bytes for digital output status. so which bit I must make 1 ? I have no idea.

for input I found answer: I supplied wih 24VDC and yes i saw value changed from 0 to 1 in plc.

SENTRON PAC3200

Digital inputs

but for digital output, I still could not find how to activate pac3200's digital output from plc software.