3.7.1 FORTRAN unit numbers used by ABAQUS

Products: ABAQUS/Standard ABAQUS/Explicit

Reference

“Execution procedure for ABAQUS: overview,” Section 3.1.1

Overview

ABAQUS uses the FORTRAN unit numbers outlined in the table below. Unless noted otherwise, you should not try to write to these FORTRAN units from user subroutines. You should specify unit numbers 15–18 or unit numbers greater than 100.

FORTRAN unit numbers

Code	Unit Number	Description
ABAQUS/Standard	1	Internal database
	2	Solver file
	6	Printed output (`.dat`) file (You can write output to this file.)
	7	Message (`.msg`) file (You can write output to this file.)
	8	Results (`.fil`) file
	10	Internal database
	12	Restart (`.res`) file
	19–30	Internal databases (scratch files). Unit numbers 21 and 22 are always written to disk.
	73	Text file containing meshed beam cross-section properties (`.bsp`)

Code	Unit Number	Description
ABAQUS/Explicit Analysis	6	Printed output (`.log` or `.sta`) file (You can write output to the `.sta` file.)
	60	Package (`.pac`) file
	61	State (`.abq`) file
	62	Temporary file
	63	Selected results (`.sel`) file
	64	Message (`.msg`) file
	69	Internal database; temporary file
ABAQUS/Explicit Packager	12	Restart (`.res`) file
	23	Communications (`.023`) file
	60	Package (`.pac`) file
	61	State (`.abq`) file
	62	Temporary file
	63	Selected results (`.sel`) file
	69	Internal database; temporary file