Ec250 Emcp 4.2 , 3.3

Dears ,
i need to connect netbiter ec250 using rs 485 into EMCP 4.2 and 3.3 but actually i dont which pins at EMCP at do this .

kindly is there any gentemen to show me which pins at rear panel to connect rs 485 ?

i appresiate in advance

Best Regards
john gladstone

On the netbiter you will be using pins 14 & 13 for A & B respectively.
For the EMCP I was only able to find info regarding the 4.2 which uses pins 3 (A) 4 (ref) 5 (B). Page 6 of the following manual has more details.