SMC Networks EX600-SPR Series Operation Manual page 68

Channel diagnostic data
Each channel diagnostic data is composed of 3 bytes, which means a maximum of 12 errors can be
detected. However, only one error can be output per unit, if the same unit generates two or more errors, the
error on the channel with the lowest number will be output.
7
Byte 28 1
Byte 29
Byte 30
• • •
7
Byte 61 1
Byte 62
Byte 63
Unit number
Bit No. Meaning
0~4 Displays unit number 0~9
5 Reserved
6 (Bit is always 0)
7 (Bit is always 1)
Channel number
Bit no. Meaning
0~5 Displays channel number 0~63
6, 7 Input / output type:
00= Reserved, 01= Input, 10= Output, 11= Input / output
Diagnostic type
Bit No. Meaning
0~4 Error code
5~7 Channel Type:
001 = Bit (Unit other than analog input unit)
101 = Word (Analog input unit)
Error Code
Error code
Meaning
(Decimal)
0 Reserved
1 Short circuit detection
2~5 Reserved
6 Open circuit detection
7 Analogue input exceeds upper measurement range
8 Analogue input falls below lower measurement range
9~15 Reserved
16 Analogue input exceeds user set upper limit value
17 Analogue input falls below user set lower limit value
18 Channel ON/OFF counter exceeds set value
19~29 Reserved
30 Connection error on I/O unit
(Note2)
31 Hardware error
Note1) The level number becomes the priority level (1→2→3) if the same channel on a unit generates two
or more errors, the lowest number will be output.
Note2) The channel number when an error is generated is assumed to be 0.
6 5 4
0 –
6 5 4
0 –
3 2 1
3 2 1
- 68 -
0
Unit number A
Channel number A
Diagnostic type A
0
Unit number L
Channel number L
Diagnostic type L
Level
Note1)
3
3
3
3
3
3
3
1
2
No.EX##-OML0005