4. RS232 AND 485/422 ASCII+TOP (‘A’ AND ‘R’ TYPE)
The ASCII+TOP card has a 4 points plug and a DB9 connector. The 4 points plug is used
to output the TOP through static relays and the DB9 plug is used to output time frame using
RS-232 levels.
Here is a schematic overview of the ASCII+TOP output:
The ASCII DB9 connector is localized on the backside of the rack and is shown below.
Connector pin-out for RS232 : Connector pin-out for RS485 and RS422 :
The pulse (TOP) output is described below.