When I send a command for example RPOSJ to my xrc over serial, im expecting back a ack1. However Im getting back a EOT followed by a ENQ. When I acknowledge the ENQ I get back another ACK0 then acknowledging that I get back a STX with seven spaces(0x32) followed by a ETB and the checksum. I cannot figure out why this is.

Motoman XRC 2001 strange output for commands on serial