I have sorted the issue. The coordinates were not in the correct place in the CAD drawing. The drawing in Revit was correct but needed to change the DWG export settings, Coordinate system basis, in Revit to "Shared" Coordinates. Now the DWG matches the revit coordinates and loads into Penmap in the correct position.
andrew@precisedesigns.com.au/service.svc/s/GetAttachmentThumbnail?id=AAMkADFlNzQyZWZjLTMyNmQtNDVjNC05NDI5LTE1MGRjOGJjNWRiYwBGAAAAAAAs3fZ7rRW%2BTb5jdQ45%2FkTXBwCm1zpJY89hQrvAtUIrQynTAAAAAAEJAACm1zpJY89hQrvAtUIrQynTAACm2lweAAABEgAQAJrt8kFUB4dLun7iERhDUy0%3D&thumbnailType=2&owa=outlook.office.com&scriptVer=2019102702.12&X-OWA-CANARY=7QfbmpY3nUeqeyb0nCLD2ODBSitCYtcYJmd-SMGYBGIs-xTbdgQVljyt79iYVqIxkzxsp6v-9JI.&token=eyJhbGciOiJSUzI1NiIsImtpZCI6IjA2MDBGOUY2NzQ2MjA3MzdFNzM0MDRFMjg3QzQ1QTgxOENCN0NFQjgiLCJ4NXQiOiJCZ0Q1OW5SaUJ6Zm5OQVRpaDhSYWdZeTN6cmciLCJ0eXAiOiJKV1QifQ.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.OjjI8WegzN-Kt9SF-G2NAdDhfUl_o5vCzgIGY-QVY9SUpWRALLWrrFeVbDRDWYENmAR5HACp5VWsd4zwQEcd22RcNx9oBh217hjtiWQpu-FiwfuH2rM7kwqnsfbQ7BFoxBBvsnG-9_EnZ9mV5NkW6zFJcUaHsMESI8l2DTE--2fmPdrj46eSYt0ips-pVojdQjB0EkOpzRBs6tLHwU9mHZ6He-KdWE6CbtRLyjgGJkx62nAAZsnbmW9SpEqhzmsfadN8y4T8Lfn_hXLtc3EulsMTMcJNXbIxOuEKjW8-coEeKbZYi9CKF6EtEFX4KkaOihUKhaRZVnuaw48g1GV3dg&animation=true">andrew@precisedesigns.com.au/service.svc/s/GetAttachmentThumbnail?id=AAMkADFlNzQyZWZjLTMyNmQtNDVjNC05NDI5LTE1MGRjOGJjNWRiYwBGAAAAAAAs3fZ7rRW%2BTb5jdQ45%2FkTXBwCm1zpJY89hQrvAtUIrQynTAAAAAAEJAACm1zpJY89hQrvAtUIrQynTAACm2lweAAABEgAQAJrt8kFUB4dLun7iERhDUy0%3D&thumbnailType=2&owa=outlook.office.com&scriptVer=2019102702.12&X-OWA-CANARY=7QfbmpY3nUeqeyb0nCLD2ODBSitCYtcYJmd-SMGYBGIs-xTbdgQVljyt79iYVqIxkzxsp6v-9JI.&token=eyJhbGciOiJSUzI1NiIsImtpZCI6IjA2MDBGOUY2NzQ2MjA3MzdFNzM0MDRFMjg3QzQ1QTgxOENCN0NFQjgiLCJ4NXQiOiJCZ0Q1OW5SaUJ6Zm5OQVRpaDhSYWdZeTN6cmciLCJ0eXAiOiJKV1QifQ.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.OjjI8WegzN-Kt9SF-G2NAdDhfUl_o5vCzgIGY-QVY9SUpWRALLWrrFeVbDRDWYENmAR5HACp5VWsd4zwQEcd22RcNx9oBh217hjtiWQpu-FiwfuH2rM7kwqnsfbQ7BFoxBBvsnG-9_EnZ9mV5NkW6zFJcUaHsMESI8l2DTE--2fmPdrj46eSYt0ips-pVojdQjB0EkOpzRBs6tLHwU9mHZ6He-KdWE6CbtRLyjgGJkx62nAAZsnbmW9SpEqhzmsfadN8y4T8Lfn_hXLtc3EulsMTMcJNXbIxOuEKjW8-coEeKbZYi9CKF6EtEFX4KkaOihUKhaRZVnuaw48g1GV3dg&animation=true">