Siemens SIMATIC NET CP 142-2, Manual, Page: 30 / 84

B8976111/02 AS-i Master Module CP 142-2
3-8
Content of Data Record 1
The diagnostic information of the CP 142-2 is contained in data record 1. The data record is updated
by the CP 142-2 whenever an interrupt event occurs and is made available to the ET 200X distributed
I/O system.
Data record 1 contains a delta list that includes all the slaves that deviate from the configuration, in
other words, missing, incorrect or not configured (but existing) slaves (each slave is assigned one bit
in the delta list: 0 = no error; 1 = error).
On the CP 142-2, data record 1 has a length of 11 bytes and is structured as follows (the byte
numbering relates to the structure of the DP slave diagnostic information in Figure 3-3a and Figure
3.3b. The following applies to the error bits specified in data record 1: 0 = no error; 1 = error.):
Byte 13
7
0 0 0
0 Bit no.
Group error bit
Internal CP error
(e.g. EEPROM defective)
External CP error
(e.g. slave failed or APF)
At least 1 slave deviates from expected configuration
Voltage on AS-i cable too low
Byte 14
7 0
1C
H
: Module class
Byte 15
7
0 0 0 0 0
0
At least 1 slave deviates from
expected configuration
0: CP normal status
1: Offline
Hardware fault on CP (internal watchdog)
Byte 16
7
0 0 0 0 0 0 0
0
EEPROM of CP 142-2 defective
Figure 3-3a: Content of Data Record Bytes 13 to 16