Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual - Manual (Page 297)

File Search and File Diagnostic Instructions
Chapter 17
17Ć5
Figure 17.4
FILE DIAGNOSTIC
012
017
File A
XOR
310
315
File B
320
325
File R
XOR Instruction SetĆUp (A.)
Result
Stored
in File R
Actual
I/O States
Desired
I/O States
A 1 in File R indicates an
error in machine operation.
Error File Format (B.)
Word 500 stores error number in 4Ćdigit BCD.
Word 501 stores input /output (I/O) in bits 00Ć03.
ą(Any leading digits are stored in BCD in bits 4Ć7 and 10Ć13.)
Word 502 stores the rack number in bits 14Ć17.
ąThe module group number in bits 10Ć13, the high/low (1.0)
ąslot in bit 04 and the terminal number in bits 00Ć03.
0 0 0 1
0
1 2 1 4
500
501
502
00 03 04 07 10 13 14 17
Instruction Overview:
Output instruction
Key Sequence: [FILE] 20
Requires 5 words of user program
Counter is manipulated by instruction
Usually used in conjunction with an XOR instruction