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Table Chapter 4 .4: Decision Logic Table Four (DLT 4)
WARNING: OBSERVE ALL STANDARD STATIC AND SAFETY PRECAUTIONS
BEGIN WITH:
CONDITIONS
ASSUMPTIONS: 1. RS422/232 ERROR STATUS
2. ON LINE SYSTEM CONNECTION
CONDITIONS
I/O ERROR # 0
(NO I/O ERROR HAS OCCURRED.)
I/O ERROR # 10
I/O ERROR # 11
I/O ERROR # 12
I/O ERROR # 13
I/O ERROR # 14
I/O ERROR # 15
I/O ERROR # 16
I/O ERROR # 17
I/O ERROR # 18
I/O ERROR # 19
I/O ERROR # 20
I/O ERROR # 21
ACTIONS
OUTPUT INSTRUCTION RECEIVED WHILE ANOTHER
OUTPUT INSTRUCTION IS BEING EXECUTED. THE
FIRST IS EXECUTED WHILE THE NEXT
INSTRUCTIONS ARE IGNORED.
CHECK FOR PROPER SYNTAX IN ESCAPE
SEQUENCES.
CHECK FOR VALID CONTROL INSTRUCTION DATA.
VERIFY PARAMETERS DO NOT EXCEED S.C. LIMITS.
TOO MANY PARAMETERS RECEIVED. ADDITIONAL
PARAMETERS AFTER THE CORRECT NUMBER ARE
IGNORED.
CONFIRM MATCHING PARITY AND DATA BITS.
WRONG HANDSHAKE. CHECK DTR
NORM/HARDWIRE.
INPUT BUFFER OVERFLOW. THIS WILL RESULT IN
THE LOSS OF DATA AND PROBABLY AN HP-GL
EMULATION ERROR.
VERIFY CABLE CONFIGURATION.
MATCH BAUD RATE ON PLOTTER AND COMPUTER.
TRY LOWER BAUD RATE.
CHECK FOR EXCESSIVE CABLE LENGTH.
LINE DRIVER/LINE RECEIVER DEFECTIVE.
RS422/232 SERIAL XTDA/XRDA FAILURE. (OCCURS
ONLY WITH A LOOP BACK CONNECTOR IN TEST.)
RS422/232 DTR OR CTS TEST FAILURE. (OCCURS
ONLY WITH A LOOP BACK CONNECTOR IN TEST.)
CADJET 2
COLUMN NUMBERS
1
2
3
4
5
6
7
8
N Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
N
N
N
N
1
1
1
1
1
1
2
1
2
Troubleshooting
9
10
11
12
13
Y
Y
Y
Y
Y
1
1
2
1
1
1
4-7
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