None of the Mitsubishi PLCs have built in analog. It's always an additional module. If it's an FX3U, they offer modules that connect right onto the left side of the PLC, which might look like part of the PLC. But those modules are either 4 inputs or 4 outputs, not a couple outputs. On the right side extension bus they make 2,4, or 8 point input modules and 2 or 4 point outputs. They also offer 2 combo modules, 2in/1out ot 4in/1out.
If it's an FX3U, get the FX3U User's Manual Analog Edition and if it's on the right side, get the manual for the specific analog module. Right side uses TO/FROM instructions, left side addresses automatically.