Siemens SINUMERIK 828D Manual page 49

Table 7- 4
"alive and
well" counter
0
1
2
3 ... 7
Table 7- 5 Elimination of error at "alive and well" counter status "2"
Value Cause
byte 1
1 In the temperature
measurement operating
mode, an input voltage is
too high. The hardware may
become damaged/destroyed
as a result.
2 Reserved
3 Overload at the outputs
4 Incorrect operating mode
selection, e.g. temperature
measurement at the analog
outputs.
5 Internal error, system error
6 Overrange at the inputs
7 Overrange at the outputs
The analog outputs retain their last specified value.
1)
PP 72/48D 2/2A PN I/O module
Manual, 03/2010
Overview of messages as a function of the "alive and well" counter
Value Message
byte 1
0 Reserved
Temperature value
0 No error
1 Impermissible input voltage in temperature measurement mode
2 Reserved
3 Overload at the outputs
4 Incorrect operating mode selection
5 Internal error, system error
6 Overrange at the inputs
7 Overrange at the outputs
0 Reserved
Effect
The "PNFault" LED is activated.
The outputs are disabled.
The value 0x80 is stored in Status Byte
1.
-
The "PNFault" LED is activated.
The outputs are disabled.
The value 0x80 is stored in Status Byte
1.
Selection of operating mode is rejected,
The "PNFault" LED is activated.
The outputs are disabled.
The value 0x80 is stored in Status Byte
1.
7.2 Diagnostics via input image
Remedy
It is essential that a Pt100 element is
connected to terminals 3-4 or 7-8.
1)
The module must be restarted with
Power ON following elimination of the
error.
-
Check the loads at the analog output.
The module must be restarted with
1)
Power ON following elimination of the
error.
If selected correctly, the module
switches to cyclic operation.
The firmware has detected a system
error, this status can only be exited by
1)
means of a switch-on / switch-off.
Check input circuit and adjust, if
required.
Correct values in the user program.
Error and system messages
49