The first one is not working

2nd option works. below is the inp i used

Code:
open read card name "waterbox.pdb" unit 12
read sequ tip3 532
GENE BOX NOANGLE NODIHE
read sequ tip3 323
GENE BOX1 NOANGLE NODIHE

!generate box setup first none last none noangle nodihedrals
!rewind unit 12
read coor pdb unit 12

!open read card name "waterbox_watb.pdb" unit 13
!read sequence PDB unit 13
!generate box1 setup first none last none noangle nodihedrals
!rewind unit 13
!read coor pdb offs 532 unit 13

join box box1 renum

open unit 25 card write name "waterbox.psf"
write psf card xplor unit 25
* PSF
*


error message while reading coordinates.

Code:
CHARMM>    !generate box setup first none last none noangle nodihedrals
 CHARMM>    !rewind unit 12
 CHARMM>    read coor pdb unit 12
  read CHARMM-pdb format
          SPATIAL COORDINATES BEING READ FROM UNIT 12
 TITLE>   EQUILIBRATED WATER
 TITLE>    DATE:    11/20/17      4:21:35      CREATED BY USER: APACHE
 TITLE>  *
 ** WARNING ** After reading, there are no coordinates for selected atom:   457   153 TIP3 OH2 
 ** WARNING ** After reading, there are no coordinates for selected atom:   458   153 TIP3 H1  
 ** WARNING ** After reading, there are no coordinates for selected atom:   459   153 TIP3 H2  
 ** WARNING ** After reading, there are no coordinates for selected atom:   469   157 TIP3 OH2 
 ** WARNING ** After reading, there are no coordinates for selected atom:   470   157 TIP3 H1  
 ** WARNING ** After reading, there are no coordinates for selected atom:   471   157 TIP3 H2  
 ** WARNING ** After reading, there are no coordinates for selected atom:   643   215 TIP3 OH2 
 ** WARNING ** After reading, there are no coordinates for selected atom:   644   215 TIP3 H1  
 ** WARNING ** After reading, there are no coordinates for selected atom:   645   215 TIP3 H2  
 ** WARNING ** After reading, there are no coordinates for selected atom:   928   310 TIP3 OH2 

 ** A total of   963 selected atoms have no coordinates