Siemens CPU 948 - Page 353

Structure of the parameter
field (RS 76 to RS 78)
Parameter
type
Structure of the parameter field
00H No parameter; parameter 1, 2, 3 = 0
01H Parameter 1: block type/block number (IDs from block header)
Parameter 2: operation that caused an interruption
02H Parameter 1: interface module number (IM 302) (distributed periphery)
Parameter 2: number of the defective interface
Parameter 3: incorrect byte offset
03H Parameter 1: not used
Parameter 2: error address high
Parameter 3: error address low
04H Parameter 1: block type/block number (IDs from block header)
Parameter 2: operation that caused the interruption
Parameter 3: number of the DB/DX to be opened
05H Parameter 1: The following bits are set depending on the error:
Bit no. 0 = 1: timed interrupt/period 1
Bit no. 1 = 1: timed interrupt/period 2
: : : :
Bit no. 7 = 1: timed interrupt/period 8
Bit no. 8 = 1: timed interrupt/period 9
Bit no. 9 = 1: clock masked (ignored) for too long
= 0: queue overflow
Bit no. 10 reserved
Bit no. 11 reserved
Bit no. 12 = 1: interrupt G
Bit no. 13 = 1: interrupt F
Bit no. 14 = 1: interrupt E
Bit no. 15 = 1: interrupt X
06H Parameter 1 data word expected in DX 0 or DB 1 header
Parameter 2 actual data word in DX 0 or DB 1 header
07H Parameter 1 block ID or code word in DX 0 or DB 1
Parameter 2 incorrect parameter 1 in DX 0 or DB 1
(FFFFH: parameter irrelevant)
Parameter 3 incorrect parameter 2 in DX 0 or DB 1
(FFFFH: parameter irrelevant)
Table 8-12 RS 76 to RS 78: Parameter types
Bit Assignment of the System Data Words
CPU 948 Programming Guide
C79000-G8576-C848-04
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