Panasonic FP2 ET-LAN Technical Manual page 258

[53H] Read contact information
Reading is carried out from the specified contact of the contact area.
Area code
Area type
Link relay (WL)
Internal relay (WR)
External output relay (WY)
External input relay (WX)
Timer/counter set value area (SV)
Timer/counter elapsed value area (EV)
Link data register (LD)
Special internal relay (WR)
Special data register (DT)
Data register (DT)
File register (FL)
14-30
Area code
00
01
02
03
04
05
06
07
08
09
0A