Parallel (GPI) tallies are connected directly to the Tally 1 and Tally 2 D37 connectors on the TM1
controller.
These are freely assignable as inputs or outputs in groups of eight. Tally inputs will occupy the lowest
numbered pins starting with the Tally 1 connector. The output parallel tallies (if any are assigned)
will start from the next available pin on the D37 connector.
The following tally in/ out arrangements are possible between the Tally 1 and Tally 2 connectors: