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using API QWCRDRTN to view data from DTAARA
I know the data size is hardcoded, for a few dollars I can provide a solution for this 
PHP Code:
dQWCRDRTN DS
d QWCBAVL 10i 0 Qwc Rdtaa Data
d QWCBRTN 10i 0 Bytes Available
d QWCTVRTN 10 Bytes Returned
d QWCLIBN 10 Type Value Return
d QWCLVRTN 10i 0 Library Name
d QWCNBRDP 10i 0 Length returned
d QWCVALUE 475 Number Decimal
//
//
//
dQUSEC DS
d QUSBPRV 10i 0
d QUSBAVL 10i 0
d QUSEI 7
d QUSERVED 1
d QUSED01 1
drcvvarsiz s 10i 0 inz(%size(QWCRDRTN))
ddtaaraname s 20 inz('IN1BSIN LBIFIL ')
dstrpos s 10i 0 inz(-1)
dstrlen s 10i 0 inz(%size(QWCVALUE))
//
// Required Parameter Group:
//
// 1 Receiver variable Output Char(*)
// 2 Length of receiver variable Input Binary(4)
// 3 Qualified data area name Input Char(20)
// 4 Starting position Input Binary(4)
// 5 Length of data Input Binary(4)
// 6 Error code I/O Char(*)
//
d $getdataarea pr extpgm('QWCRDTAA')
d recieveVar 475
d lengthRecvar 10i 0
d dataareaLib 20
d startpositon 10i 0
d lengthofInp 10i 0
d errorcode 17
//
// run the api and retrieve the data
// this is useful if you have same dataarea in *multiple
// libraries and need info from them all via RPG.
// just change the data in "dtaaraname" and rerun for
// other library/dataarea's
//
/free
QUSBPRV = 0;
$getdataarea(QWCRDRTN :
rcvvarsiz :
dtaaraname :
strpos :
strlen :
QUSEC
);
// The variable QWCVALUE now contains the *DTAARA value
dsply %subst(QWCVALUE:1:30) ' ';
*inlr = *on;
/end-free
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