CONTREX CX-1200 User Manual
Page 254
7 - 15
Message Error Bits Definitions:
Bit 7
=
(1) CRC Failure
Bit 6
=
(1) Buffer Overflow
Bit 5
=
(1) ETX Not Received/Data Field Error
Bit 4
=
(1) Invalid Function/Data Error
Bit 3
=
(1) Over-Run Error
Bit 2
=
(1) Noise Error
Bit 1
=
(1) Framing Error
Bit 0
=
(1) Parity Error
Example:
“86” = the number 10000110 (binary) would indicate a CRC failure with Noise errors and Framing
errors occurred when the transmission message was received.
Other Errors Returned From The Control Through Serial Communications:
00
=
OK
01
=
General Data Error
02
=
Res Byte Error
03
=
Invalid Parameter
04
=
String too Long
05
=
Out of Range
06
=
Not Allowed
07
=
Lockout During Run
08
=
Not Ready
09
=
Block Parameter Error
10
=
Block Value Error
11
=
Block Parameter Memory Limit
12
=
MIN Error
13
=
MAX Error
14
=
Invalid Command (PLC/Control Command Send)
15
=
Invalid Operand (PLC)
16
=
<END> Statement Missing (PLC)
17
=
PLC Program Memory Limit
18
=
Defaults Loaded
19
=
Backup Loaded
20
=
Backup Saved
21
=
Checksum Error
22
=
Faults Cleared
23
=
Test Passed
24
=
Test Failed
25
=
No Compare Parameter
26
=
Divide by Zero
27
=
Long Word Overflow
28
=
Parameter Transfer Limit Overflow
29
=
Memory Read request too long
30
=
Data Field Length Error
31
=
Message Function Request/Parameter NOT Processed
32
=
Invalid Function Request