MASS 6000 DIGITAL OUTPUT READ PROBLEM

The different Mass 6000 manuals either omit stuff or put stuff on different pages.

My page references come from an older Mass6000 'Handbook'
SITRANS F C MASS 6000
(English / 7202 KB)
Edition: 1
Handbook
Part number of the documentation: FDK:521H1005
Document identification number: DKFD.PS.028.L1.02

available from this short URL: http://tinyurl.com/9jnd6c7

Check out page 45 where the two different wiring schemes for active and passive are displayed. Note that active and passive outputs each use 2 output terminals of 3 terminals, but each uses different terminals.
Active output is on terminals 57 & 58. Passive output is on terminals 56 and 57.

Active and passive refer to where the power comes from for the output circuit, where active means power is supplied internally from the flowmeter, but passive uses an external power supply to power the circuit.

The way I interpret the passive output is a DC power supply (+) on 56, DC power supply (-) on terminal 58. The PLC input is 56 (+) and 57 (-).

On page 50, section 6.8 tells about active/passive and shows setting a jumper position for either active or passive.

The digital output must be configured for frequency. The menu path for digital frequency is on page 57.

I have some recollection of the necessity to turn OFF the current output when it is not used. If the current output is open circuited, an error code will appear. The error code disappears when the current output is turned OFF. I don't know if the use of the frequency output conflicts the use of the current output.